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Does the size of coffee powder affect the extraction time?-Common grinding thickness diagram

Published: 2026-04-06 Author: World Gafei

Last Updated: 2026/04/06, 1. The amount of powder [should describe the ratio of powder to water, that is, the ratio of coffee powder to extracted coffee. But to be frank, there is only one variable]: the change in the amount of powder determines the number of substances that can be involved in the extraction. The amount of powder is directly proportional to the concentration and inversely proportional to the extraction rate. With the increase of the amount of powder, more substances can be involved in the extraction, which reduces the repeated extraction of unit water in unit powder.

1. Powder content [should describe the ratio of powder to water i.e. coffee powder to extracted coffee. But to put it bluntly, just one variable: the amount of powder changes to determine how much material can participate in the extraction. The amount of powder is proportional to the concentration and inversely proportional to the extraction rate. With the increase of powder amount, more substances can participate in the extraction, reducing the unit water repeatedly extracted from the unit powder too much wood odor.

2. Grinding degree: The change of grinding degree directly affects the particle size and surface area of the unit powder. The finer the particle, the easier it is for water to extract with the powder.[Inappropriate example: diced meat is easier to cook than the whole piece], and the extraction efficiency is higher.[Extraction efficiency and extraction rate are two completely different concepts.]

3. Time: As time goes on, the extraction rate gets higher and higher until it stops at 30%.

4. Water temperature: water temperature is positively correlated with extraction efficiency and has little effect on concentration.

The influence of powder pressing force can be neglected.

Powder distribution mainly affects the uniform extraction.

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