Making cold brew at home is dead simple. Two ingredients, no special equipment, 5 minutes of active work. Here's the method that actually produces great cold brew—not watered-down coffee.
What You Need
Coarsely ground coffee, filtered water, and something to steep it in. That's it. A mason jar, a French press, or even a pitcher works fine. No fancy cold brew makers required.
The ratio that matters: 1 part coffee to 5 parts water for concentrate, or 1:8 for ready-to-drink strength.
The 2-Step Method
Step 1: Combine and Wait
Add coarsely ground coffee to your container. Pour room-temperature or cold filtered water over it. Stir gently to make sure all grounds are saturated. Cover and put it in the fridge.
Steep time: 12-18 hours. Under 12 and you get weak, sour coffee. Over 24 and you get bitter, over-extracted mud. The sweet spot is 14-16 hours.
Step 2: Filter
Strain through a fine mesh strainer lined with cheesecloth, a paper coffee filter, or just use your French press plunger. You want smooth liquid with no grounds or sediment.
What you have now is cold brew concentrate. It'll keep in the fridge for up to 2 weeks.
The Grind Matters More Than You Think
Use coarse grind—like raw sugar or breadcrumbs. Fine grind = over-extraction = bitter, chalky cold brew. Most grocery store pre-ground coffee is too fine for cold brew. If you're buying pre-ground, look for "coarse" or "French press" grind.
Best beans for cold brew: medium to dark roast, single origin or a clean blend. Light roasts can work but tend to produce more acidic cold brew, which partially defeats the purpose.
How to Serve It
If you made concentrate (1:5 ratio), dilute with equal parts water, milk, or your preferred liquid. Over ice is classic. Straight from the fridge is fine too.
For the strongest cold brew experience, drink concentrate undiluted. That's essentially what Bare Brew does in a can—320mg of caffeine from pure cold brew concentrate, ready to go.
Common Mistakes
Using hot water: That's just iced coffee. Cold brew requires cold or room-temp water for the slow extraction that makes it smooth.
Steeping too long: 24+ hours doesn't mean stronger—it means more bitter acids extracted. Diminishing returns after 18 hours.
Wrong grind size: Fine grind is the #1 reason homemade cold brew tastes bad. Go coarse.
Bad water: If your tap water tastes bad, your cold brew will taste bad. Bare Brew uses filtered water for a reason—it's half the recipe.
When Homemade Doesn't Cut It
Making cold brew at home is great for weekends. But for daily caffeine—commutes, gym bags, desk drawers—canned cold brew wins on convenience. No 14-hour wait, no filtering, no cleanup. Bare Brew delivers 320mg of clean caffeine in a grab-and-go can, brewed with the same two ingredients you'd use at home: coffee and water.
