Introduction to the blending knowledge of espresso, blending of espresso

Beans for making espresso are generally made of several kinds of beans in proportion, but no matter what kind of beans are mixed, they are all aimed at achieving two goals: one is to reduce costs, the other is to balance taste and outstanding characteristics, no matter how good our matching is, you should know that there is only one ultimate goal, that is, to reduce costs, and several kinds of beans are put together. In order to achieve beyond the quality of any single kind of beans, so as to achieve the effect of 1: 1 > 2.

Italian coffee beans (100% Arabica coffee beans)

Production of espresso (production of espresso)

Most Italian beans are roasted from medium to deep, but no matter how deep they are, when you open the bag and see the beans, it should be the aroma of coffee, not a strong smoky smell. Visually, the beans should not be pure black, or deep brown, although they are medium to deep roasted, the beans should not be shiny. If your beans are shiny, there must be only two reasons. They may be kept for a long time, at least for more than 3 weeks, or they may be too deep. Either of these two reasons will cause the coffee in your cup to have a halala taste, or unbearably bitter.

According to the baking degree of beans, the best drinking time for Italian beans is between 1 week and 1.5 months. at this stage, the coffee has obvious sweetness, long-lasting taste, balanced overall taste, amber or dark brown red color and sticky taste.

2. Manufacturing equipment

With the right beans, the production of espresso is also strictly required for the equipment, because the extraction of espresso is different from the use of siphon, hand brewing and other production methods, and there are quantitative standard requirements for the equipment, the water temperature should be between 90-92 degrees, the pressure is about 8 Pa, and the pressure is relatively stable, 14-18 grams of uniform coffee powder, extraction time of about 25 seconds, extraction volume of 20-25 milliliters. Only when it is made under such conditions is it possible to get satisfactory coffee.

It is quite common in China to be able to meet the above conditions, but there is not much household equipment purchased:

Optional coffee maker:

Oscar Ocscar Nuova Simonelli is about 5000 yuan.

Silver Rancilio, commonly known as "Miss S", costs about 4000 yuan.

Expobar Office leva twin boiler version is about 11000 yuan.

Expobar Office Leva single boiler version is about 8000 yuan

GLY Shuttle is about 6000-8000 yuan.

Rocket Giotto is about 18000 yuan.

Optional coffee mill:

Huijia ZD-15 is about 700 yuan

Rancilio Rocky is about 3000 yuan.

Taiwan 900N is about 2500 yuan

Mazzer mini is about 4000 yuan.

Mazzer super jolly is about 4700 yuan.

The above machines are produced by regular manufacturers, the quality is guaranteed, most of them have accepted the baptism of time, durable, and have a certain reputation between players and small businesses. In addition to the above equipment, there are many fake miscellaneous brand equipment on the market. If there is no limit on your funds, I think you should not try to buy those equipment. You may be able to use them normally for the time being, but no one can guarantee how long they will last. If your funds are really limited, I personally think that it is better to spend your limited funds on tasting beans and only buy some simple and easy-to-use coffee making utensils, such as hand brewing equipment, siphon and so on.

3. Production technology

With beans and suitable equipment, finally, there are human factors that we can control. Because the extraction conditions of Italian coffee are very extreme, there are slight changes in the production process. Finally, in the coffee cup, it will be several cups, dozens of times or even hundreds of times magnification, reflected in the feeling after the entrance is very strong and unbearable. Therefore, in the process of production, we should pay attention to every small detail. Next, I will explain the production process of espresso in order. I am not an expert or master, and the following is only personal experience and experience, which I would like to share with you:

(1) Coffee bean grinding

Grinding coffee beans can be said to be very important for a cup of coffee. Only a well-ground coffee powder with the right thickness can extract delicious coffee and get rid of the taste you don't want in the coffee powder. So it's very important to find the right gear. You may have to adjust it several times to find a suitable position.