Theory 117/Coffee extraction/Ratio lens
Strength Is Solubles Against Water
The claim
Brew strength is set by the ratio of solubles extracted to water retained, so under-extracted coffee can taste strong if little water is left.
01Mechanism
Concentration depends on both terms; the ratio separates strength from extraction.
02Prediction
Strength should track the ratio.
03Refutation
Strength tracking extraction yield would remove water.