20 Strongest Coffee Brands in the World

The strongest coffee is defined by caffeine concentration per serving measured in milligrams (mg) rather than flavor. the best strong coffee beans balance high caffeine with complex flavor, fair price, easy availability, and freshness. To choose the best strong coffee beans, select Robusta beans with double the caffeine of Arabica and ensure they are freshly roasted to order for stronger punch and delicious taste.

The strongest coffee for caffeine is Devil Mountain Coffee Black Label, containing 1,555 mg per 12-ounce cup, making it the highest-caffeine coffee available. Other coffee brands such as Biohazard, Colipse, and Death Wish deliver 400–1000 mg of caffeine per 8 oz, but excel in flavor balance, fresher roasting, and providing a more enjoyable coffee experience overall. For those seeking an extreme caffeine kick, the strongest coffees available in 2025 are listed in the comparison table below.

1. Colipse High Caffeine Blend

Colipse High Caffeine Blend is a specialty-grade coffee that combines 50% Indian Robusta Cherry from Kerala with 50% Tanzanian Bourbon grown at 1,200–2,000 meters in Mount Kilimanjaro. This is a medium-light 'American' roast coffee, roasted to order in small batches and delivered within days. Colipse High Caffeine Blend delivers over 400 mg of caffeine per 16-ounce serving, making it one of the best tasting high caffeine coffees in the U.S. and more than double the typical amount. It is both strong and delicious.

Taste: Colipse High Caffeine Blend balances floral and fruity notes with rich chocolate, caramel, and dried cranberry flavors. Wet processed Tanzanian Bourbon delivers a clean and complex taste. Dry processed Robusta Cherry, where beans dry inside the fruit pulp and absorb more natural sugars and flavors, provides a bold flavor with sweetness and chocolate notes. A medium-light roast preserves the coffee’s origin flavors, providing moderate body, bright acidity, and a smooth mouthfeel. It leaves a lingering aftertaste of honey, lime, and light caramel.

About Colipse Coffee: Colipse Coffee sells freshly roasted single-origin specialty coffee online as a specialty coffee brand.

Availability: Colipse High Caffeine Blend is available online at the Colipse website for $21.50 USD per 12 oz (340 gram) bag. It comes with free shipping, same-day roasting, and no hidden fees. This high caffeine blend is available in whole beans for super automatic bean-to-cup machines, or pre-ground coffee in coarse, medium, and fine grind sizes. You can choose bag sizes of 12 oz, 16 oz, 2 lb, or 5 lb to brew either 4 cups per week or 12–50 cups at once for households and offices.

Pros: Roasted on demand, Guaranteed freshness, High-quality beans, Direct trade.

Cons: Higher prices than other strong coffee brands.

Recommendations: Colipse High Caffeine Blend is among the most caffeinated coffees that delivers strong flavor, boosts energy in the morning, reduces mid-morning slumps, and sustains focus during long office hours.

2. Black Rifle Coffee CAF Roast

Black Rifle Coffee CAF Coffee Rounds is a medium-roast product from Black Rifle Coffee Company. It uses Arabica beans from Colombia and Brazil. The coffee contains approximately 200 mg of caffeine per cup, twice the standard amount.

Taste: Black Rifle Coffee CAF Coffee Rounds has a bold, smooth flavor with notes of smoky maple, milk chocolate, and clove. It provides a rich, creamy texture with no bitter aftertaste. The coffee suits espresso or black coffee in single-serve machines and delivers a balanced, energizing brew for daily use.

About Black Rifle Coffee: Black Rifle Coffee Company operates as a veteran-owned business founded by Evan Hafer in Salt Lake City, Utah, and produces premium coffee.

Availability: Black Rifle Coffee CAF Coffee Rounds is available on the company’s website, Amazon, Walmart, and select U.S. retailers. It comes in 12, 32, or 50 single-serve round boxes, with subscriptions available only for the 12-count box. The 12-count box costs approximately $14.99 with free shipping on the company’s website.

Pros: High caffeine, Energy boost, Keurig compatible, Free shipping.

Cons: Limited formats, No certifications, Variable pricing.

Recommendation: Black Rifle Coffee CAF Coffee Rounds is perfect for those who need a high-caffeine, convenient k cup coffee.

3. Death Wish Coffee Dark Roast

Death Wish Coffee Dark Roast is a bold, organic, and Fair Trade-certified coffee that blends Arabica and Robusta beans from Peru, India, and other regions. It contains approximately 473 mg of caffeine per 12-ounce cup, nearly double that of standard coffee.

Taste: Death Wish Coffee Dark Roast is a full-bodied coffee with low acidity and prominent dark chocolate and black cherry notes. It delivers a smooth texture, subtle sweetness, and a non-bitter finish. This coffee is ideal for strong black coffee or espresso and pairs well with desserts like brownies or chocolate pastries.

About Death Wish Coffee: Death Wish Coffee is an independent roaster founded by Mike Brown in 2012 that produces a high-caffeine dark roast blend.

Availability: Death Wish Coffee Dark Roast is available in 10 oz, 16 oz, and 34 oz bags, as well as single-serve pods, in whole bean or ground formats (fine, medium, coarse). It is sold on the official Death Wish Coffee website, Amazon, Walmart, and select U.S. stores like Target and Kroger. A 16 oz bag retails for $15.79–$19.99.

Pros: USDA Organic, Fair Trade, Multiple formats.

Cons: No roast date, Variable pricing, Extra shipping fees

Recommendation: Death Wish Coffee Dark Roast delivers the strongest coffee with bold dark chocolate and black cherry flavors.

4. Bones Coffee High Voltage

Bones Coffee Company’s High Voltage is a medium-roast coffee that uses Arabica and Robusta beans from premier coffee-growing regions. It contains about 200 mg of caffeine per 8 oz cup, twice the standard amount.

Taste: High Voltage has a bold, smooth flavor with chocolate, nutty, and subtle fruity notes. It provides a rich, full-bodied texture with low acidity and no bitter aftertaste. The coffee suits hot brewing methods like espresso, French press or pour-over and excels as a cold brew with a 4:1 coffee-to-water ratio for added strength.

About Bones Coffee Company: Bones Coffee operates as a family-owned roaster in Cape Coral, Florida, since 2016.

Availability: High Voltage is available on the Bones Coffee website, Amazon, Target, and select U.S. retailers. It comes in 12 oz bags as whole bean or ground, with a medium grind option. The price is approximately $17.99 per 12 oz bag, with free U.S. shipping on orders over $50.

Pros: High caffeine, Energy boost, Rainforest Alliance.

Cons: No origin details, Small bags only, Limited grind sizes, No roast date.

Recommendation: Bones Coffee delivers high caffeine and bold flavor, making it ideal for French press, drip, or cold brew.

5. Fire Department Coffee Skull Crushing Espresso

Fire Department Coffee Skull Crushing Espresso delivers bold espresso flavor. It blends robusta and premium beans, crafted by a veteran-owned U.S. business. It contains high caffeine that delivers strong energy.

Taste: Skull Crushing Espresso has a full-bodied, bold flavor with a smooth texture and rich taste. It offers a robust profile that suits potent espresso drinks and traditional brewing methods. The coffee pairs well with chocolate desserts or hearty breakfast dishes and appeals to those who prefer a strong, memorable cup.

About Fire Department Coffee: Fire Department Coffee is a specialty roaster founded in 2016 by Navy veteran Luke Schneider and firefighter Jason Patton.

Availability: Skull Crushing Espresso is sold on Fire Department Coffee’s website, Amazon, and select U.S. retailers. It is available in 12 oz bags for $14.99, 24 oz bags for $24.99, and 5 lb bags for $49.99, with prices varying by retailer. The coffee comes in whole bean, ground, or K-Cup formats and includes free U.S. shipping on orders over $50.

Pros: Multiple formats, Various bag sizes.

Cons: No origin details, No decaf option, Limited roast date info.

Recommendation: Skull Crushing Espresso is ideal for espresso machines or standard coffee brewers. It delivers a bold, full-bodied flavor that suits coffee lovers seeking a robust, high-caffeine experience.

6. Blackout Coffee Brewtal Awakening

Brewtal Awakening Coffee by Blackout Coffee is a dark roast coffee that is roasted in Florida, USA. It uses high-caffeine beans that deliver strong energy and bold flavor.

Taste: Brewtal Awakening Coffee has a bold, rich flavor with a smooth finish. It contains notes of dark chocolate and roasted nuts. This coffee performs well in espresso, drip, French press, and cold brew methods.

About Blackout Coffee: Blackout Coffee is an independent U.S. roaster that produces bold, strong, and fresh coffee.

Availability: Brewtal Awakening Coffee is available on Blackout Coffee’s website, Amazon, Walmart, and select U.S. retailers. It is sold in 12 oz bags for $16.95 or 5 lb bags for $87.95, with whole bean, medium, coarse, or medium-fine grind options.

Pros: Multiple bag discounts, Positive reviews, Rewards points, Extra caffeine

Cons: No origin details, Small bag only, Limited grind options.

Recommendation: Brewtal Awakening Coffee suits consumers who want bold, strong, full-bodied coffee that works in drip coffee makers and French presses.

7. Biohazard Coffee

Biohazard Coffee is an extremely caffeinated light roast made from Brazilian Robusta beans. It has 928 mg of caffeine per 12 oz serving, which ranks among the strongest in the world.

Taste: Biohazard Coffee tastes cleaner, less bitter, and less gritty than similar high-caffeine coffees, with flavor notes of chocolate, popcorn, nuts, and tobacco. It has a consistent but simple flavor, making it drinkable without milk or sugar. This coffee delivers a mild but bitter taste, preferred over stronger coffees for balance.

About Biohazard Coffee: Biohazard Coffee is a specialty brand marketed as the world’s strongest coffee, created in Brooklyn and owned by Terry VanBibber.

Availability: Biohazard Coffee offers 12 oz and 16 oz bags in whole bean or pre-ground form. It sells on Biohazard’s website, Amazon, and Walmart in the United States, Canada, and the UK for $15.99 per 12 oz bag. Bulk and wholesale purchases sell through Biohazard’s website, with prices varying by region.

Pros: High caffeine, Whole bean option, Multiple sizes, Positive reviews

Cons: High price, No roast date, Mixed energy feedback

Recommendation: Biohazard Coffee ranks as a top strong coffee with high caffeine content and flexible purchasing options.

8. Devil Mountain Coffee Black Label

Devil Mountain Coffee Black Label is an organic dark roast coffee in ground form from Devil Mountain Coffee. It contains 1,555 mg of caffeine per 12 oz cup, which makes it one of the world’s strongest coffees.

Taste: Devil Mountain Coffee Black Label has a bold, full-bodied flavor with deep chocolate notes. It offers a smooth texture that enhances black coffee or milk-based drinks like lattes.

About Devil Mountain Coffee: Devil Mountain Coffee is an independent brand founded in 2017 and owned by Terry Emry in Concord, California.

Availability: Devil Mountain Coffee Black Label is sold on Amazon in the United States in 16 oz and 32 oz ground coffee bags. It costs approximately $20-$22 for a 16 oz bag, with Subscribe & Save discounts available. Free shipping applies on orders over $35 through Amazon.

Pros: World’s strongest, USDA Organic, Fair Trade, Dark bold flavor, Positive reviews.

Cons: No roast date, Limited availability.

Recommendation: Devil Mountain Coffee Black Label is ideal for consumers who seek a high-caffeine, organic dark roast coffee. Its robust flavor and versatility suit those who need a strong energy boost.

9. Banned Coffee

Banned Coffee is a Colombian dark roast blend of Arabica and Robusta beans with 474 mg of caffeine per 12 oz, delivering high energy without losing balance.

Taste: Banned Coffee has a bold, smooth flavor with low acidity, featuring notes of berries, chocolate, and a clean finish. It is suited for drip brewers, espresso machines, and Keurig systems.

Availability: Banned Coffee is available on Amazon and Walmart in the United States and Canada. It is sold in 10 oz, 12 oz, 16 oz, and 2 lb bags, with whole bean, ground, and K-Cup options. The price starts at $16.99 for a 12 oz bag.

Pros: High caffeine, Arabica Robusta blend, U.S. roasted.

Cons: Limited stock, Not organic, No certifications, Inconsistent quality.

Recommendation: Banned Coffee is recommended for caffeine enthusiasts who need a strong, smooth coffee for drip or espresso brewing.

10. High Voltage Coffee

High Voltage Coffee Co. produces a high-caffeine coffee in Australia. It uses a blend of premium Arabica and Robusta beans, which contain approximately 1150 mg of caffeine per 12 oz cup.

Taste: High Voltage Coffee Co. offers a bold, full-bodied flavor with a smooth texture and no bitterness. It features rich, aromatic notes from its Arabica and Robusta blend, which is ideal for black coffee or espresso. The coffee suits French press or espresso brewing and pairs well with hearty breakfasts or chocolate desserts.

About High Voltage Coffee Co.: High Voltage Coffee Co. is a family-owned Australian business that specializes in high-caffeine specialty coffee.

Availability: High Voltage Coffee Co. is sold on its official website in 200 g or 1 kg whole bean bags and Nespresso-compatible capsules. It costs $49.99 for a 1kg bag, with free shipping on orders over $75 in Australia.

Pros: High caffeine, Multiple formats.

Cons: No roast date, No grind options.

Recommendation: High Voltage Coffee Co. is ideal for Australian consumers who prioritize high caffeine content for intense energy needs.

11. Red Goat Coffee

Red Goat Extreme Caffeine Coffee delivers a high-caffeine blend of robusta and arabica beans sourced globally. It roasts in a European facility with five generations of expertise to maximize caffeine content.

Taste: Red Goat Coffee delivers smooth, full-bodied flavor with bold earthiness and minimal bitterness. It has clean aftertaste that strengthens its robust profile. The coffee suits black coffee or espresso and performs well in French press or drip brewing. It pairs with rich foods like chocolate desserts or savory breakfasts and caters to strong caffeine seekers.

About Red Goat Coffee: Red Goat Coffee operates independently in the United States under Kaladi Brothers Coffee and sells products online.

Availability: Red Goat Coffee sells on its website, Amazon, Walmart, and eBay in 16 oz bags or 72-count Keurig-compatible capsules. It comes in whole bean or ground options suitable for multiple brewing methods. Pricing lists $29.95 for a 16 oz ground bag and $32.95 for whole bean on Walmart with free shipping on select platforms.

Pros: Six times caffeine, Multiple forms, Free shipping.

Cons: No roast details, No certifications, Variable pricing.

Recommendation: Red Goat Extreme Caffeine Coffee is recommended for consumers who need a potent, smooth coffee with high caffeine content, ideal for demanding days or intense workouts.

12. Very Strong Coffee

Very Strong Coffee is a medium-roast coffee made from 100% Robusta beans sourced from Vietnam. It is promoted as the UK's Strongest Coffee with 1,350 mg of caffeine per 12 oz serving that delivers a strong energy boost.

Taste: Very Strong Coffee has a full-bodied texture, high sweetness, and notes of dark chocolate with a syrupy mouthfeel. The coffee suits espresso, drip, or cafetière brewing and is enjoyable black or with milk. It provides a strong caffeine kick with a smooth, lingering aftertaste.

About Very Strong Coffee: Very Strong Coffee is a UK brand by Great British Trading Company offering high-caffeine 100% Robusta coffee.

Availability: Very Strong Coffee sells on verystrongcoffee.com and Amazon in 250g (8.8 oz) bags of whole beans or medium-ground coffee. It costs £9.45 per 250g bag on Amazon and includes free UK shipping for orders over £20. The coffee is available in the United States and select international markets with pricing that varies by retailer.

Pros: 100% Robusta, Twice caffeine, Strong aroma.

Cons: No certifications, Limited availability, No roast date.

Recommendation: Very Strong Coffee is a top choice for consumers who seek strong coffee beans with a sweet, full-bodied flavor.

13. Shock Coffee

Shock Coffee is a medium roast coffee that blends Robusta and Arabica beans from Central and South America. It has up to 50% more caffeine than standard coffee, which provides a strong energy boost.

Taste: Shock Coffee has a bold, smooth flavor with a rich, espresso-like aroma. It is low in acidity and suitable for black coffee or milk-based drinks. The coffee is compatible with drip or French press brewing methods and provides a high caffeine boost for daily energy needs.

About Shock Coffee: Shock Coffee sells medium roast, high-caffeine ground coffee and has operated as an independent brand since 2006.

Availability: Shock Coffee is sold on the Shock Coffee website and Amazon in 1-pound bags. It has a standard price of $16.29 per pound ($1.02/ounce), a subscription price of $14.66 per pound.

Pros: 50% more caffeine, All-natural, Positive reviews

Cons: No organic label, No certifications (beyond kosher), No roast date.

Recommendation: Shock Coffee is ideal for users who need the strongest type of coffee for quick morning brews or busy schedules.

14. Black Insomnia Extreme Caffeine Coffee

Black Insomnia is a dark roast sold as ground, whole bean, and single-serve pods. It ranks as one of the strongest coffees worldwide, delivering 1,105 mg of caffeine in a 12 oz cup.

Taste: Black Insomnia Extreme Caffeine Ground Classic Roast Coffee is a medium-dark roast with a bold, smooth flavor. It features caramel, hazelnut, and macadamia aromas with a rich dark chocolate taste and velvety texture. This coffee is low in acidity and has no bitterness.

About Black Insomnia Coffee: Black Insomnia Coffee started in Cape Town in 2016 as an independent brand and later expanded to the U.S. market.

Availability: Black Insomnia Extreme Caffeine Ground Classic Roast Coffee is sold on the Black Insomnia website, Amazon, Walmart, and select retailers in the U.S. and internationally. It comes in 1 lb bags of ground or whole bean coffee, K-Cups, or Nespresso-compatible pods. Prices range from $18.99 to $23.99 per 1 lb bag.

Pros: Extremely high caffeine, Arabica–Robusta blend, Barrel roasted, Smooth flavor.

Cons: Expensive price, No roast date, No organic/Fair Trade, Limited availability.

Recommendation: Black Insomnia ranks among the top 10 strongest coffees worldwide, delivering extreme caffeine for drip, espresso, or pod-based brewing.

15. GothRider Coffee Gasoline

GothRider Gasoline Coffee is a medium city roast blend of Arabica and Robusta beans sourced from Rwanda’s Shyembe Cell. It has high caffeine content, twice that of average coffee, due to dense Robusta beans and a slow-roasting Italian method.

Taste: GothRider Gasoline Coffee has a full-bodied profile with vibrant acidity and mild sweetness. It features dark chocolate and spice notes with a smooth texture and clean finish. The coffee performs well in black coffee, espresso, and milk-based drinks like lattes.

About GothRider Coffee: GothRider Coffee sells premium coffee online as an independent Canadian brand founded in 2015.

Availability: GothRider Gasoline Coffee is available on the GothRider website, Amazon, and select retailers like Procafetière.ca in the USA and Canada. It comes in 12 oz or 2 lb bags, offered as whole bean or ground for espresso, drip, pour-over, French press, or cold brew, roasted to order. It costs $24.99 CAD for a 12 oz bag with free shipping on orders over $100 CAD in the USA and Canada.

Pros: Multiple grind sizes, USDA Organic, High caffeine.

Cons: No roast date information.

Recommendation: GothRider Gasoline Coffee ranks among Canada’s best strong coffees, ideal for espresso and French press brewing.

16. Cannonball Coffee Maximum Charge

Cannonball Coffee Maximum Charge delivers over 400 mg of caffeine per serving from single-origin Robusta beans grown in Rwanda’s Coko region. This medium roast is one of the strongest coffees in the UK and provides a powerful energy boost.

Taste: Cannonball Coffee Maximum Charge has a smooth texture with dark chocolate and toasted malt flavors. It offers a clean finish, which makes it enjoyable black or in milk-based drinks like lattes. Its balanced flavor profile suits those who prefer bold yet smooth coffee.

About Cannonball Coffee: Cannonball Coffee is an independent UK roaster founded by military veteran Duncan Grocock.

Availability: Cannonball Coffee sells Maximum Charge on its website and through select UK retailers, including Amazon UK. It comes in 250 g and 500 g bags as whole beans or ground coffee, suitable for espresso, filter, or cafetiere brewing. The coffee costs £14.00 for 250 g and £22.00 for 500 g, with free UK shipping on orders over £20.

Pros: High caffeine, Rwandan Robusta, Free UK shipping, Subscription discount.

Cons: No grind options, Higher price

Recommendation: Cannonball Coffee Maximum Charge is recommended for coffee drinkers who seek a high-caffeine, smooth-tasting coffee with dark chocolate and toasted malt notes.

17. Gunpowder Coffee

Gunpowder Coffee, produced by Gunpowder Coffee Company, is a ground coffee sourced from South America. It uses a high-caffeine bean blend and is marketed as the world’s most caffeinated coffee.

Taste: Gunpowder Coffee has a strong, bold flavor with a smooth finish. It offers a clean, layered taste that retains intensity across brewing methods. The coffee suits black coffee or espresso drinks and performs well in a French press.

About Gunpowder Coffee: Gunpowder Coffee sources high-caffeine ground coffee from South America and has operated since 2017 as an independent business.

Availability: Gunpowder Coffee is sold on its company website and Amazon for $19.99 per 16 oz bag plus $5 shipping in the United States. It is sold only in ground form in a resealable 16 oz bag and is not roasted to order. The coffee is available in K-Cup-style cups compatible with Keurig 1.0, 2.0, and other machines.

Pros: Extremely caffeinated.

Cons: No roast info, No whole bean, No certifications, Inconsistent shipping.

Recommendation: Gunpowder Coffee delivers the strongest brew with bold flavors for consumers seeking intense taste.

18. Sons of Amazon Coffee Strong & Fair

Sons of Amazon coffee uses ethically sourced Robusta and Arabica beans from the Amazon Rainforest. It is roasted in the UK to a strong level for maximum caffeine.

Taste: Sons of Amazon has a bold aroma with high caffeine content and intense flavor. It features a dark cocoa aftertaste and is ideal for black coffee or espresso. The coffee suits French press brewing, which enhances its full-bodied texture.

About Sons of Amazon: Sons of Amazon is a specialty coffee brand that small-batch roasts high-caffeine coffee using selected whole beans sourced directly from the Amazon rainforest region.

Availability: Sons of Amazon is available online through Bertie’s Brews’ website, Amazon UK, and Amazon US. It is sold in 100g, 500g, and 17.6 oz bags with whole bean, coarse, or fine grind choices. It is priced at £17.99 for a 500g bag on Amazon UK, includes free UK shipping, and offers subscriptions with up to 10% discounts.

Pros: Ethically sourced, Traceable beans, High caffeine, Multiple sizes.

Cons: Inconsistent pricing, Small bags only.

Recommendation: Sons of Amazon is ideal for those who prefer strong coffee with robust flavor and high caffeine content.

19. Napalm Coffee Extra Dark Roast

Napalm Coffee Extra Dark Roast is a coffee made from 100% Arabica beans. It features an extra dark roast profile and a full-bodied texture.

Taste: Napalm Extra Dark Roast is a full-bodied coffee with bold chocolate and smoky flavors derived from 100% Arabica beans. It has a smooth texture with minimal bitterness. This coffee is ideal for espresso or black coffee prepared in a French press or drip machine. It pairs well with chocolate-based desserts, such as brownies or cake.

About Napalm Coffee: Napalm Coffee is a family-owned roaster based in Atlanta, Georgia.

Availability: Napalm Coffee Extra Dark Roast is available in 12 oz bags as whole bean or ground (coarse, medium, fine, or extra fine) through Good Times Coffee Company’s website and select retailers like Amazon, Walmart, and eBay. It is priced at $11.49–$14.99 per 12 oz bag, with free shipping offered on some platforms.

Pros: Extra dark roast, 100% Arabica, Multiple grind sizes, Free shipping.

Cons: No origin details, Limited subscription info, Small bag only.

Recommendation: Napalm Coffee Extra Dark Roast provides a strong, bold, full-bodied flavor for drinkers who prefer extra dark roast coffee.

20. GymBrew Renegade Extra Strong

GymBrew Renegade delivers a medium roast coffee blending Arabica and Robusta beans from Brazil. It contains 333 mg of caffeine per 12-ounce serving to provide a strong energy boost.

Taste: GymBrew Renegade Extra Strong by Runner Bean Coffee has a rich aroma with chocolate, caramel, and nutty flavors. It offers a smooth, clean taste without burnt notes and a balanced aftertaste. The coffee suits black coffee or espresso and brews well in drip coffee makers or espresso machines.

About GymBrew Renegade: GymBrew Renegade is owned by Runner Bean Coffee Roasters, a UK-based company.

Availability: GymBrew Renegade sells on runnerbeancoffee.co.uk and wbroast.co.uk for £22.95 per 250g bag. It comes in compostable bags with whole bean or ground options for all brewing methods. The coffee roasts to order and includes free UK tracked delivery on orders over £15. Subscription discounts remain available.

Pros: High caffeine, Simple ingredients, Roasted to order, Free UK delivery.

Cons: No grind details, No organic certification, High price.

Recommendation: GymBrew Renegade Extra Strong by Runner Bean Coffee is ideal for athletes and busy individuals who need a high caffeine boost.

What is the Strongest Coffee?

The strongest coffee refers to coffee with the highest caffeine content per serving, usually measured in milligrams of caffeine per ounce or cup. Unlike “strong flavor,” which comes from dark roasting, strongest coffee is about potency and energy impact. Brands like Biohazard, Colipse, or Death Wish achieve high caffeine by using Robusta beans with nearly twice the caffeine of Arabica. The most caffeinated coffee contains between 700 and 1000 milligrams of caffeine per 8-ounce cup, compared to about 95 milligrams of caffeine in a standard 8-ounce cup of regular coffee.

What roast of coffee is the strongest? The strongest coffee roast for caffeine is medium and light roast due to shorter roasting time, while dark roasts is stronger in terms of flavor with with bold, intense taste. A 2022 study published in Saudi Journal of Biological Sciences by Eman Alamri found that caffeine content highest in medium roast (1.17%), followed by light roast (1.13%) and dark roast (1.08%), with differences not statistically significant.

How to Make Strong Coffee?

To make strong coffee, follow the five steps below.

1. Use a higher coffee-to-water ratio, about 2 tablespoons of ground coffee per 6 ounces of water.
2. Choose light roast or Robusta beans for naturally higher caffeine content.
3. Grind beans finely for espresso or coarsely for French press, depending on method.
4. Brew longer to extract more flavor and strength, but avoid over-extraction to prevent bitterness.
5. Adjust strength further with brewing methods like espresso machines, moka pots, or cold brew concentrate.

Where to Buy Strong Coffee?

You can buy strong coffee online from Colipse, which offers a High Caffeine Coffee Blend made with Arabica Bourbon and Robusta Cherry beans. Our high caffeine blend combines Indian and Peaberry beans for maximum strength and flavor. It is freshly roasted to order and available in whole bean or various grind sizes. At Colipse, we ship in resealable bags within five business days to preserve freshness. The blend delivers extra caffeine with rich chocolate, caramel, and berry notes for both energy and taste.

What is the Strongest Type of Coffee?

The strongest type of coffee is Robusta. A 2019 study published in Nutrients by Pedram Shokouh showed Robusta beans contain nearly twice the caffeine of Arabica, with green robusta averaging about 3.85% caffeine by dry weight compared to 2.35% in arabica. A 2021 study published in Foods by Ewa Olechno found that espresso made with 95% Robusta and 5% Arabica, brewed at ~7 bar and 92 °C, produced the highest caffeine concentration of about 7.5 g per liter in a 25 mL shot.

What is the Strongest Coffee Drink?

The strongest coffee drink by brewing method is espresso with concentrated flavor and caffeine from hot water forced through finely ground coffee under pressure. Espresso achieves the highest intensity and boldness compared to French press or cold brew. While cold brew has high caffeine from longer steeping and higher coffee-to-water ratios, espresso remains the strongest brewing method by strength and concentration.

The strongest coffee drink by volume is Starbucks Blonde Roast filter coffee in a Venti size with 475 mg of caffeine. The strongest coffee at Dunkin is the large iced coffee with nearly 400 mg of caffeine. The most caffeinated coffee at Dutch Bros is the Nitro Cold Brew with 293 mg per serving. The most potent coffee at Walmart is Black Insomnia, marketed as "The Strongest Coffee in the World."