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Dialling it in
Start with the default ratio. Tastes sour or thin? Use a little more coffee (lower ratio) or grind finer. Tastes bitter or harsh? Use a higher ratio or grind coarser. Change one thing at a time.
The one tool that matters
A scale with a built-in timer makes ratios repeatable cup after cup. See coffee scales →
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FAQ
What is the golden ratio for coffee?
The Specialty Coffee Association's guideline is about 55 g of coffee per litre of water, roughly 1:18. Most people find 1:15 to 1:17 a good starting range.
How many grams of coffee for one cup?
For a 240 ml mug at 1:16, use about 15 g of coffee, roughly 3 level tablespoons of whole beans.
Is cold brew concentrate supposed to be diluted?
Yes. A 1:8 concentrate is usually diluted about 1:1 with water or milk before drinking.
