The knowledge library · 抽出
Brew it better than the café.
Ratios, steep times, grind size, troubleshooting — everything I know about making cold brew at home, tested in my own kitchen and written to be the last guide you need to read.
Brewing guide · 抽出
Best Grind Size for Cold Brew
Why cold brew wants a coarse, sea-salt grind, whether regular pre-ground coffee works, and when a burr grinder actually earns its price.
Brewing guide · 抽出
How Much Caffeine Is in Cold Brew?
Cold brew caffeine ranges, why the numbers vary so wildly, how homemade compares to store-bought, and where the sensible daily line sits.
Brewing guide · 抽出
Cold Brew Ratio Guide: 1:4 to 1:16, Explained
What 1:4, 1:8, and 1:16 actually mean, why ratios go by weight not scoops, and which strength to brew for how you actually drink coffee.
Brewing guide · 抽出
Cold Brew vs Iced Coffee: The Actual Difference
Cold brew and iced coffee differ in brew method, flavor chemistry, and caffeine — plus the underrated third option cafés keep forgetting.
Brewing guide · 抽出
How Long to Steep Cold Brew
12 vs 18 vs 24 hours, room temperature vs fridge, and what over-steeping actually does. The steep-time question, answered with numbers.
Brewing guide · 抽出
How to Make Cold Brew
The definitive cold brew method — exact ratios by weight, grind size, steep time, straining, and troubleshooting. One jar, one scale, no guesswork.