Question 1

What is the golden coffee-to-water ratio?

Accepted Answer

The Specialty Coffee Association (SCA) recommends a 1:18 ratio (1 gram of coffee per 18 grams of water) for a balanced brew. Stronger brews use 1:15, and lighter brews use up to 1:17. The classic 'golden ratio' is 1:16.

Question 2

How many grams of coffee per cup?

Accepted Answer

For a standard 8 oz (240 ml, ~240 g) cup at 1:16, use about 15 grams (2 tablespoons) of ground coffee. A 12 oz mug needs ~22 g, and a 16 oz travel mug needs ~30 g.

Question 3

Why measure coffee in grams instead of scoops?

Accepted Answer

Coffee density varies a lot by roast and grind size, so a 'scoop' can be 5–12 grams. Weighing in grams is consistent and reproducible — that is why specialty baristas always use a scale.

Question 4

What ratio should I use for espresso?

Accepted Answer

Espresso uses a much tighter brew ratio — typically 1:2 (e.g. 18 g of coffee in, 36 g of espresso out in 25–30 seconds). Cold brew concentrates use 1:4 to 1:8 for a strong base you dilute before drinking.