Understanding Coffee Brew Ratios
A coffee brew ratio is the relationship between the amount of ground coffee (the dose) and the amount of water (the yield). It is universally expressed as 1:X, where 1 is the part of coffee, and X is the parts of water.
For example, a 1:16 ratio means that for every 1 gram of coffee, you will use 16 grams of water. By weighing both your coffee and water, you achieve consistency that is impossible to get with scoops or measuring cups.
Popular Brew Methods
- Pour-Over (1:15 to 1:17): Provides a clean, bright, and nuanced cup. Start at 1:16 and adjust. If it tastes too weak, try 1:15. If it's too bitter or heavy, try 1:17.
- French Press (1:12 to 1:15): Uses immersion brewing which requires a coarser grind. A tighter ratio like 1:12 yields a heavy, full-bodied cup.
- Espresso (1:1.5 to 1:2.5): Highly concentrated. Traditional espresso pulls at 1:2 (e.g., 18g of coffee yields 36g of liquid espresso). Ristrettos pull tighter (1:1.5), and lungos pull longer (1:3).
- Cold Brew (1:5 to 1:8): Makes a concentrate. Typically brewed at 1:8, then diluted with ice or water when serving.
How to Adjust Your Brew
The brew ratio is your foundation. Once you have a set ratio, you can adjust the flavor of your coffee by changing the grind size or water temperature.
- Coffee tastes sour or salty? It's under-extracted. Grind finer, increase water temperature, or use slightly more water (a higher ratio, like moving from 1:15 to 1:16).
- Coffee tastes bitter or dry? It's over-extracted. Grind coarser, decrease water temperature, or use slightly less water (a lower ratio).