tags: [] - extraction - fundamentals - brewing-science date_created: 2026-03-13 updated: 2026-03-23

What Is Extraction¶

← Part of Coffee Extraction Fundamentals MOC

Extraction is the process of dissolving soluble compounds from ground coffee into water. Every brewing decision — grind size, temperature, time, agitation — exists to control which compounds dissolve, in what quantity, and in what order.

Core Definition¶

Coffee Extraction — Dissolving compounds from coffee into water
Extraction Process — How dissolution occurs at the particle level
Solubility — What dissolves, and under what conditions
Extraction Goal — Balanced flavour as the target outcome

Why Extraction Matters¶

The flavour in the cup is a direct function of what was extracted, when it was extracted, and how evenly extraction proceeded across the coffee bed.

Extraction and Flavor — How extraction level maps to taste
Under-Extraction Problems — Too little dissolved: sour, salty, hollow
Over-Extraction Problems — Too much dissolved: bitter, harsh, astringent
Ideal Extraction Range — The 18–22% target zone (SCA Gold Cup)
Extraction Consistency — Why repeatability matters as much as accuracy

Universal Principles¶

These principles apply across all brew methods, regardless of equipment or format.

Universal Extraction Principles — Cross-method concepts
Extraction Independence — Extraction and strength are separate variables
Extraction Predictability — Understanding variable relationships before brewing
Extraction Control — Managing variables deliberately and systematically
Extraction Mastery — The progression from reaction to anticipation

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