Food & cooking

Coffee extraction comparison log

Compare apparent extraction yield from dose, beverage mass and measured TDS.

Coffee extraction comparison log
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Apparent extraction (%) = beverage mass × measured TDS (%) ÷ dry coffee dose. Also reports beverage/dose mass ratio. Dose must be positive and TDS 0–100. This beverage-only arithmetic does not correct retained liquid, suspended particles or refractometer bias and does not prescribe a taste target.

See a worked example

Worked example

A fixed demonstration, separate from the values you enter above.

Project CSV
Brew,DoseG,BeverageG,TDSPct
Filter A,20,300,1.3
Espresso B,18,40,9

Example result

Example result
BrewDose (g)Beverage (g)TDS (%)Apparent extraction (%)Beverage/dose ratio
Filter A203001.319.515
Espresso B18409202.22222222222

Apparent extraction yield (%) = beverage mass × TDS (%) ÷ dry dose. Uses measured beverage only, without correcting retained liquid, measurement bias or suspended particles.

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