Coffee common sense the grinding process of coffee should also match the cooking method.

The quality of the minced coffee has a great influence on the next cooking process. The grinding process should also match the cooking method, which is the key to extracting the best flavor from coffee beans. The cooking method of coffee powder which is in contact with hot water for a long time requires thicker particles. If the coffee powder is too fine relative to the cooking method, the coffee will be too bitter, hard and "overcooked". At the other extreme, of course, the coffee powder is too thick to make the finished product tasteless.

Because of the large contact area between the powder and the air, the ground coffee powder is easy to oxidize and degrade. With the improvement of people's taste in drinking coffee, more and more people tend to grind coffee beans at home and cook them now. Now there are many household appliances specially used to grind coffee.

There are three kinds of grinding methods for coffee beans: "grinding", "grinding" and "mortar grinding".

"Grinding" uses two rotating parts to squeeze and crush coffee beans. The grinding parts can be disc-shaped or conical. Conical machines are less noisy and less likely to block. The coffee powder produced by the grinding method is more uniform and the taste is more consistent when cooking. The design of the conical grinding disc reduces the required speed, which is generally less than 500 revolutions per minute. The slower the grinding speed, the less heat generated by friction, so the aroma of coffee is not easy to lose. By adjusting the grinding parameters, the cone grinder can be used for the preparation of different kinds of coffee. A better machine can grind the ultra-fine powder needed for Turkish coffee. Disc grinders generally have higher rotational speed and generate more heat, but they have a wide range of functions, economical and practical, and are suitable for the preparation of most household coffee.

"polishing": most modern machines actually cut coffee beans into pieces at a speed of 20, 000 to 30, 000 revolutions per minute (some people simply use beaters). The consumption of this kind of blade grinder is longer, but the accumulated heat in the grinding and the uneven size of the coffee chips make it difficult to produce high-quality drinks. In theory, this kind of grinder can only be used for drip coffee pots. The dust they produce can clog the filters in Espresso and French press machines.

"mortar mill": if you can't find good grinding equipment, all you can do is to use a pestle and a mortar to slowly enjoy the fun of labor.

Grind good powder-warm up for good coffee

Fragrance will not lie, whether a cup of coffee is fresh and mellow, in grinding, has been leaked first.

For those who know how to taste coffee, the aroma of coffee in his memory must contain the aroma of coffee floating in the air during grinding.

Grind before cooking, leave the coffee mellow

In addition to falling in love with the pleasant atmosphere that wantonly occupies the house, the most important thing is that they understand that grinding at the last minute before brewing is the basic secret of coffee preservation. Because grinding too early or buying ready-made ground coffee powder will increase the surface area of coffee in contact with air and humidity and gradually lose its aroma.

In addition, due to different brewing methods, the suitable size of coffee powder particles is also different, so it is best to adjust the grinding degree according to the way of each brewing in order to make the coffee taste most incisively and vividly.

Rough, medium and fine grinding, each performing his own duties

Time, in the coffee bean life travel, always occupies an important position. The length of maturity determines whether the coffee is mellow or not. The long time for baking determines the degree of baking.

Let's say that brewing is a scene in which coffee beans are on and off when they meet with water. So, in this last crucial plot, the important thing is still time. The length of brewing time not only determines the coffee concentration of different depth, but also affects the thickness of the grinding particles.

Generally speaking, the shorter the cooking time, the more the coffee powder must try its best to expand its surface area and come into contact with water, and the finer the particles will be; on the contrary, the longer the cooking time, the rougher the grinding particles must be, so as to prevent unnecessary impurities from being extracted. For example, fast-extracted Espresso requires flour-like fine grinding, while filter brewing, which must be fully soaked to release the aroma, requires crumb-like rough grinding.

Offer a reward for excellent grinding equipment and book coffee

Grinding particle thickness, in addition to the particle size, uniformity is also a big point. If the size is different when grinding, the concentration of coffee brewed will be uneven. Fine grinding is usually backed by excellent grinding equipment. At present, most of the general household use are hand-operated grinders, while coffee shop uses electric grinders that can quantify aroma and alcohol.

Unfortunately, the hand grinder that allows you to do your best when grinding is pleasing in appearance, but it is often difficult to achieve the goal of uniform particles, so you must be very careful when buying, and it is best to try it before making a decision. Once you buy it home, you should rotate as gently as possible to avoid friction and heat and make the beans lose their fragrance.

Grind to warm up for booking a good cup of coffee. So in every private conversation you have with coffee, don't miss the prologue of "grinding". The matching equation of the size of VS particles in the cooking method

* rough grinding: the size is as big as coarse sugar, suitable for filter coffee.

* medium grinding: gravel-shaped, the size is between coarse sugar and granulated sugar, suitable for trickling (filter paper dripping) cooking.

* Fine grinding: size as fine granulated sugar, suitable for distilled coffee pot, electric coffee pot, mocha pot.

* very fine grinding: the size is between salt and flour, suitable for Espresso, Turkish coffee, because household grinders can not grind this texture, generally must buy ready-made grinding powder, so if you want to enjoy Espresso at home, it is best to drink a large amount of fresh coffee.