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Advanced Extraction Theory

IncludedDraft
By Hana Kobayashi · 1 module · 3 lessons · 15m · Updated

TDS, extraction yield and refractometers for baristas who want to measure what they taste. In production for the January cohort.

Reading lesson

About 6 minutes to read

Lesson 2 of 3 · Measuring extraction

Extraction yield

From TDS to extraction percentage.

Extraction yield is how much of the dry coffee ended up in the cup: TDS times beverage weight, divided by the dose.

Most of our recipes land between 19% and 21%. Below that tastes sour and thin; above it, bitter and drying.