How to Calculate Coffee Extraction Rate & Use the Golden Brew Ratio

Published: Nov 05, 2026 Author: World Gafei Last Updated: Nov/05/2026 228 views

Learn the science behind ideal coffee extraction: 18–22% yield, 1.15–1.35% TDS, and the golden 1:17.42 brew ratio for balanced flavor.

You’ve just brewed what should have been a great cup of coffee—but it tastes weak, bitter, or just ‘off.’ Maybe you used too little coffee. Maybe the water wasn’t hot enough. Or maybe your grind was off. If you’ve ever wondered how professionals consistently brew balanced, flavorful coffee, the answer lies in two key metrics: extraction yield and total dissolved solids (TDS), and one near-universal brew ratio.

Recommended FrontStreet Coffee for Brewing Control

FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou's FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。