The best cold brew is made by steeping coarsely ground coffee in cold water for 12–24 hours at a 1:4 ratio for ready-to-drink, or 1:2 for a concentrate you dilute to taste. Slow, cold extraction makes it smooth, naturally sweet, and low in acidity. Here are the core recipes, a concentrate method, and the brewing secrets that make it great.
What Is Cold Brew Coffee?
Cold brew is coffee steeped in cold or room-temperature water for many hours, so it never meets heat. That gentle extraction keeps the oils and sugars intact, producing a smooth, mellow, naturally sweet cup without the sharp bitterness hot brewing can bring. It’s different from iced coffee, which is brewed hot then chilled — for the full comparison, see cold brew vs iced coffee.
The Basic Cold Brew Recipe
You need just coarsely ground coffee (medium to dark roast is ideal), filtered water, a jar or pitcher with a lid, and a fine mesh strainer or filter. Use a 1:4 ratio — 1 cup of grounds to 4 cups of water — for a smooth, ready-to-drink batch.
- Combine grounds and water; stir gently for even saturation.
- Cover and steep 12–24 hours at room temperature or in the fridge.
- Strain through a fine filter or cheesecloth into a clean container.
- Store in the refrigerator for up to two weeks.
Serve over ice, adding milk or water to taste. For a full walkthrough, see how to make cold brew at home — and if you’re short on fridge space, how to make it without a fridge.
Cold Brew Concentrate
A concentrate is stronger and space-saving — perfect for keeping in the fridge and mixing on demand. Use a higher 1:2 ratio (1 cup coffee to 2 cups water), steep 12–18 hours, then strain and refrigerate. To serve, mix one part concentrate with one to two parts water or milk.
Ways to use the concentrate
- Over ice with milk or cream
- Blended into smoothies for a caffeine boost
- In desserts or baking for coffee flavor
- Topped with sparkling water or tonic for a refreshing twist
Choosing the Right Beans
Roast: medium to dark roasts give cold brew its full body and chocolatey depth; light roasts work too for a brighter, fruitier cup. Grind: always coarse — a fine grind makes the brew cloudy and over-extracted. Freshness: freshly roasted beans make the biggest difference, so use them soon after the roast date. Our dark roasts are a natural fit; check the grind size chart to nail the coarseness.
Brewing Secrets and Common Mistakes
- Grind coarse — fine grounds make a muddy, bitter brew.
- Give it enough time — under 12 hours tastes weak and thin.
- Use good water and fresh beans — cold brew hides nothing.
- Store it right — a sealed glass container in the fridge, not plastic (which absorbs odors).
Cold brew stays fresh for about 10–14 days; after that the flavor fades. Because it’s naturally lower in acid, it’s also a friendlier option for sensitive stomachs — see low-acid coffee for a sensitive stomach.
Cold Brew FAQ
How long should I steep cold brew?
12–24 hours. Less than that tastes weak; much longer can turn bitter. Around 16–18 hours is a reliable sweet spot.
Can I make cold brew without a special maker?
Yes — a jar or pitcher and a fine filter are all you need. A French press works well too, since it doubles as the steeping vessel and the strainer.
How strong is cold brew compared to regular coffee?
Concentrate is stronger in caffeine and flavor, but you dilute it to taste — so a finished glass can be as mild or bold as you like.
Can I heat cold brew?
Yes — warm it gently without boiling. It shifts the profile slightly but keeps that smooth, low-acid character.
Ready to brew a batch? Start with fresh beans: explore our roasts, roasted to order in Concord, CA.
Sources & Citations
- National Coffee Association — cold brew consumption grew sharply from 2020–2024
- SCA Brewing Guidelines — cold brew extracts at lower temperatures for smoother, less acidic flavor
