冷萃浓缩液与稀释计算器
冷萃浓缩液需要多少咖啡和水——以及如何把它稀释到适口的浓度。
计算器
你的冷萃配方
用 600 克水浸泡 100 克咖啡 16 小时，约可得到 400 克 1:6 浓缩液。饮用时，每份加 400 克水或牛奶 → 1:12 即饮（83.3 克/升）。
关于此计算器
Cold brew is usually made strong and then cut with water or milk to serve. This calculator does both halves: it sizes the steep (coffee + water for a concentrate at the ratio you pick), tells you how much liquid concentrate you actually get after the grounds soak up their share, and then works out exactly how much water to add to land on a drinkable ready-to-drink strength.
如何解读你的结果
Concentrate ratios run roughly 1:4 (very strong) to 1:6 (1:6 ≈ 167 g of coffee per litre). Steep cold for 12–24 hours, strain, then dilute. "Dilution 1:1" means one part water (or milk) per part concentrate — a 1:6 concentrate diluted 1:1 finishes at 1:12, a typical ready-to-drink strength. The grounds keep about 2 g of water per gram of coffee, so the concentrate you pour off is less than the water you added.
计算方法
Steep water = coffee × concentrate ratio. Concentrate strength (g/L) = 1000 ÷ ratio. Concentrate yield = steep water − about 2 g of water retained per gram of grounds. The ready-to-drink ratio = concentrate ratio × (1 + dilution parts), and the water to add = concentrate yield × dilution parts.
实例演示
100 g of coffee at a 1:6 concentrate ratio, steeped 16 hours, then diluted 1:1.
Steep with 600 g of water. After the grounds soak up ~200 g, you get ~400 g of 1:6 concentrate (167 g/L). Add 400 g of water to serve → 1:12 ready-to-drink.
常见问题
Concentrate or ready-to-drink?
Concentrate (around 1:4–1:6) keeps better, takes less fridge space, and lets each person dilute to taste. Brew ready-to-drink (around 1:8) only if you will finish it quickly. Either way, taste and adjust.
How long should I steep?
12–24 hours in the fridge is the usual range; longer and colder is more forgiving than hot brewing. Past ~24 hours you gain little and risk over-extraction and woodiness.
What grind for cold brew?
Coarse — like sea salt or coarser. Cold water extracts slowly, so a coarse grind over a long steep avoids muddy, over-extracted flavours and makes straining easier.
Why is my concentrate less than the water I added?
The spent grounds retain roughly twice their weight in water. Add 600 g of water to 100 g of coffee and the grounds keep ~200 g, leaving ~400 g of concentrate.
资料来源
- www.moustachecoffeeclub.com/how-to-make-cold-brew-coffee
- podiumcoffeeclub.com/blogs/blog/cold-brew-ratio
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