The main points, methods, instructions and matters needing attention of the bean grinder the grinding of coffee beans

Grinding essentials

The amount of ground coffee beans is determined according to the number of people who drink coffee, and also varies according to the types of coffee beans and extraction utensils. Usually, the amount of coffee powder used in most cups is about 12 grams (10 grams for fine grinding and 15 grams for coarse grinding).

1) the size of the particles should be uniform: the size of the ground particles is uneven, and the taste of the brewed coffee will not be coordinated. The finer the grinding particles, the more coffee ingredients are extracted, and vice versa. For coffee brewed under the same conditions, the finer the granule, the more bitter the coffee, while the thicker the coffee will show more sour taste.

2) avoid friction heat production: high-speed grinding coffee beans will generate heat due to friction, this heat will make coffee powder deteriorate, but also make coffee aroma greatly lost, so pay attention to slow grinding when using manual bean grinder.

3) removal of fine powder: when grinding coffee beans, some fine powders will be produced, such as mixed in the finished coffee powder, bitter substances such as tannins will be released during brewing, resulting in a large deviation in the real taste of coffee. This will be particularly prominent on the electric bean grinder, so if you choose the electric bean grinder, you should pay attention to the bean grinder with the function of automatic removal of fine powder. And if each manual bean grinder will also appear this kind of fine powder, as long as the grinded granular coffee powder is shaken and blown gently, it can be easily removed.

Maintenance of bean grinder

After the grinding is completed, you should immediately use a small brush to clean the bean grinder, otherwise the bean grinder that has not been cleaned for a long time will have many residual coffee powder accumulated together, seriously affecting the taste of coffee.

Use the bean grinder after a period of time, remember to regularly clean the rotating gear, otherwise the coffee bean oil and fine powder adhere to it, will affect its normal operation, you can choose to use a fine bamboo stick or toothbrush to remove.

Grinding thickness and applicable apparatus

When grinding coffee powder, the four words you need to remember are "fine bitter crude acid". The thickness of coffee particles is mainly divided into five levels, each of which is suitable for different coffee utensils, as follows:

Very fine grinding: the thickness is equivalent to fine granulated sugar, very bitter, suitable for espresso, suitable for espresso machines, mocha pots and Turkish pots.

Fine grinding: a little thicker than fine granulated sugar, suitable for Dutch brewing method, cold coffee maker and so on.

Medium and fine grinding: the thickness is the same as granulated sugar, is the most common particle size, suitable for hand coffee maker, American coffee maker, siphon pot (slightly bitter)

Medium grinding: between granulated sugar and coarse granulated sugar, it is most suitable for siphon pot.

Rough grinding: the particle size is equivalent to the coarse-grained sugar sold in the market, with light bitterness and strong sour taste, suitable for ice drop coffee maker, flannel brewing group and percolation coffee maker, etc.

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