Coffee strikes the body's sense of smell: the main factors affecting the taste of coffee

Daily coffee is made from coffee beans combined with a variety of cooking utensils, and coffee beans refer to the nuts in the fruit of a coffee tree, which are then roasted with appropriate roasting methods. The purity of coffee taste is also the main feature that attracts many people, so let's talk about the main factors that affect coffee:

I. temperature

Why temperature is listed as the first focus of discussion. Because other factors are better solved and there are coffee bean quality, different varieties are different. But the temperature is the most difficult for the average machine to master. Because coffee itself contains hundreds of very complex substances, and these substances will be extracted with different extraction temperatures, resulting in the ever-changing taste of coffee. Therefore, it is suggested that the best extraction temperature of coffee is between 90 °C and 92 °C.

Second, grinding degree

The degree of grinding is very extensive, generally speaking, it is related to the variety of coffee beans and the degree of baking. The grinding degree of 100% beans is generally a little thicker than that of mixed beans. To cook a perfect cup of Espresso has a certain range of grinding. When the grinding degree is too fine, when brewing coffee, the effluent will flow out in droplets, and the hot water will stay for too long, resulting in excessive extraction, and too rough grinding will cause coffee running, resulting in insufficient extraction and affecting the taste of coffee. Under normal grinding degree and normal extrusion degree, the outflow state of extracted coffee should be fine and uninterrupted, and the 30C.C.-35C.C should be finished within 25 seconds. Espresso coffee.

Third, extraction pressure

Also known as brewing pressure. A pressure of 8-9 bar is generally used. Why use this pressure? Because this is the empirical value obtained from the actual operation. Because too high pressure will break through coffee powder, create holes, form uneven extraction, and the pressure is too high, hot water passes through too fast, will cause insufficient extraction. Too little pressure will lead to excessive extraction.

Fourth, powder quantity

This factor often affects the quality and taste of a cup of coffee. In general, the appropriate amount of powder is recommended around 7.5g/ per cup of Espresso, because too much powder will cause the coffee pressed powder to top to the effluent network, so that the coffee does not have sufficient room for expansion, resulting in over-extraction. If the amount of powder is too small, the thickness of pressed powder is insufficient, and it is easy to be broken down by hot water, resulting in uneven extraction.

Fifth, the degree of extrusion

The filling pressure is so that the coffee powder can be extracted evenly. Because the coffee powder without filling pressure is easy to be broken down by hot water, resulting in uneven extraction. If the packing pressure is too dense, it will make it difficult for the hot water to pass through, resulting in excessive extraction. Proper filling pressure will match the characteristics and grinding of coffee beans.

VI. Water quality

This factor is often ignored and will become more and more important in the days to come. The essence of coffee beans is to be extracted, in which water minerals account for a large factor, in addition, the most suitable temperature for brewing coffee is 90-92 °C, which can not reach boiling hot water, so a perfect filtration system will be very important. Generally boiled water or RO water is not suitable for brewing coffee. The importance of water quality is also related to the problem of overnight water, so it is necessary to let the water flow off overnight by brewing for 3 minutes at the beginning of the machine.

7. Machine hardware equipment

It is very important to choose a qualified Espresso machine. What kind of machine is the most qualified? That is to say, the adjustable brewing temperature and pressure are the most important factors, and then evaluate the machine size, boiler size, after-sales service, price.

VIII. Human problems

Combining all the above factors, it is the passive factor, and the last remaining problem is the problem of the operator. A good operator can always pay attention to the above key points, always pay attention to avoid making mistakes, and the effectiveness of milk foaming is also a personal factor. Therefore, to make a successful cup of coffee depends on a successful coffee operator.

To sum up, there are eight main factors affecting coffee: extraction water temperature, grinding degree, extraction pressure, powder content, extrusion degree, water quality, machinery and equipment, and people. These factors mainly affect the taste of coffee, stronger coffee is also made by the perfect fine steps, improve these eight factors, make your own coffee to your satisfaction!