The scale of coffee grinding.

We say that coffee should be finally ground before brewing, the reason is that the biggest enemy of coffee is oxygen, and the biggest weakness of coffee is that its aroma is volatile. Then it is necessary to increase the speed of grinding and shorten the time it takes to expose it to air. Seriously, it is recommended to use an electric bean grinder to grind coffee at home. Convenience and durability, at least to ensure that the coffee powder is not oxidized, the aroma is not easy to volatile requirements. At the same time, the grinding is as uniform as possible.

With regard to the manual bean grinder, its biggest advantage is that it is very interesting and fun. If you can rotate the handle of the manual bean grinder at a faster speed, you can also improve the grinding speed. However, the uneven grinding of the manual bean grinder is real and difficult to solve. This is determined by its principle and structure.

About the fineness of ground coffee beans. As there are so many ways to make coffee, there are many ways to make coffee. Now I would like to introduce to you the reaction of grinding thickness to taste. The thickness of coarse ground caffeine is lower and its acidity is obvious. On the contrary, the alcohol has high thickness and low acidity. Of course, it also has something to do with the time of extraction. The cooking time is long and the thickness of alcohol is high, but the thickness of short alcohol is low. You can arrange and combine according to these two sets of relationships. The high mellow degree mentioned here does not include the situation in which the coffee is scorched.

Introduce to you the method of selecting the grinding thickness of several kinds of instruments. It is recommended to grind the kettle coarsely, because it takes a long time to soak; the mocha kettle and semi-automatic kettle are thinner, but not powdery, but have fine particles; electric drip filtration can be determined according to the taste, if it is thicker, it is finer, if it is lighter, it is thicker.

Manual brewing, siphon pot, if I say medium grinding fineness, I am afraid you think what I said is not detailed. But it must depend on the player's habits and production genre. After playing at this level, Uncle Dou won't talk any more. The uniformity of grinding is a relative index. There is no absolute uniform grinding machine in the world, but the proportion of coarse and fine particles is more or less different. Let's not dwell on this too much.