Cold brew and espresso are both concentrated coffee — but that's where the similarities end. If you're choosing between the two, here's what actually matters: caffeine, cost, taste, and what your body can handle.
Caffeine: Cold Brew Wins by Volume
A single shot of espresso delivers about 63mg of caffeine in one ounce. Most people drink a double shot — that's 126mg total. A standard cold brew (16oz) delivers 200-300mg depending on the brand. Bare Brew packs 320mg per can. That's more than two-and-a-half espresso shots in one drink.
Cost Per Milligram: Cold Brew Dominates
A double espresso at a coffee shop runs $3-4 for about 126mg of caffeine. That's roughly 2.8 cents per milligram. Bare Brew at $2 per can delivers 320mg — that's 0.6 cents per milligram. You're getting nearly 5x the caffeine value with cold brew.
Acidity: Cold Brew Is Gentler
Espresso's high-pressure, high-temperature extraction produces a more acidic cup. Cold brew's 12-24 hour steep at low temperature creates up to 67% less acid. If you have a sensitive stomach, acid reflux, or just prefer a smoother drink, cold brew is the clear choice.
Taste Profile: Different Worlds
Espresso is intense, complex, and often bitter without milk or sugar. Cold brew is naturally smooth, slightly sweet, and chocolatey. Most people who say they don't like black coffee actually don't like hot, acidic coffee — they often love cold brew straight.
Convenience Factor
Espresso requires a machine ($200-2,000+), fresh beans, proper grind, and technique. Or $4-6 every time at a cafe. Cold brew from a can requires opening a can. No machine, no barista, no skill required.
Which Should You Choose?
If you want ritual and complexity, espresso has its place. But if you want maximum caffeine, minimum cost, zero acid, and zero hassle — cold brew wins every category. And Bare Brew does it with just two ingredients: coffee and water.
Try Bare Brew — 320mg of caffeine, zero sugar, $2 a can. Do the math.
