How much coffee is ground? coffee grindability reference coffee powder is finer and sour?

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Grinding particle size

Ground coffee is extracted faster than ground rough coffee because it has a larger surface area.

Fine grinding is likely to produce a more bitter taste because many compounds can be extracted quickly. Rough grinding means more acidity. If the grinding is too rough, you may get a light, flat cup because not enough compounds are extracted to create a deep taste.

Fine grinding is also more compact, which means there is less space for water to permeate between the ground. As the coffee is poured out and filtered, this increases the cooking time. Therefore, by using smaller coffee grounds, you also extend the brewing time, providing more opportunities to extract coffee grounds.

Finer land is also more likely to be replaced by water shocks, which means you should be careful to make sure they are not "high and dry". This is when the small particles are moved by the water, are not soaked, and stay on the filter instead of being soaked.

Choose your grinder carefully. A low-quality grinder may produce a lot of "fine powder". Coffee powder is a small fragment of coffee, if not filtered, it will form turbid coffee. Because they are small, they are extracted quickly, so a large amount of fine powder can also mean a bad taste.

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