Which two points should be paid attention to most when grinding coffee beans?

1. The friction heat is suppressed to the minimum. (the aroma will fly away because of the fever)

2. Whether the grain size is uniform or not. If the particles are uneven, the concentration will be uneven.

Taking these two points into consideration, if you are a household mill, you should rotate gently and make sure that it does not produce friction heat as much as possible. Therefore, it is more appropriate to use electric grinders. The usage of the mill is to grind the beans before brewing. There are two kinds of household mills: manual type and electric type. The manual type is used if the number is small, while the electric type is more convenient for the large number of people. Cooperate with the brewing apparatus to determine the grinding method (particle size).

Manual grinder should be careful not only to produce friction heat, but also to pay attention to whether it is mixed with other things. Check whether the granules of ground coffee beans are large and neat (uneven particles may have problems with the function of the grinder, or coffee roasting is uneven, and so on).

In addition to good coffee beans, water quality and water temperature play a key role in releasing the aroma of coffee. It is recommended to install a filter containing activated carbon under the faucet so that you can have good water suitable for brewing coffee. The control ratio is 10 grams of ground coffee per 180 milliliters of water. No matter how much coffee is brewed, it is best to prepare it in the same proportion. Of course, you can also adjust the proportion according to your preference, but if you use less coffee powder, or if you grind it too finely, the brewed coffee will be light and bitter. Do not reheat the brewed coffee. Brew coffee before each drink, and only soak the amount you want to drink. The temperature to maintain the best flavor is about 86 degrees Celsius.