The origin, roasting and extraction of coffee beans give coffee a distinctive flavor.

Highland coffee is superior to others.

Among the three major coffee beans, players are after Arabica beans. This is because highland coffee is better than lowland coffee. Therefore, when commenting on the quality of coffee, the height of the origin is often included in the evaluation criteria. The higher the altitude and the lower the relative temperature, the coffee fruit can ripen slowly, so the fully ripe beans have good expansibility and are easy to bake. In the coffee producing countries in Central and South America, the quality of coffee beans is basically evaluated only by the altitude of the place of origin. As for boutique coffee, it is all highland coffee. Of course, if you play more professionally and profoundly, you will probably see whether the coffee has organic certification or not. Players generally agree that: American USBA certification, rainforest certification, fair trade certification.

Roasting gives coffee beans a second life.

It's like giving coffee beans the finishing touch. The flavor of the coffee bean itself is latent, and only moderate baking can attract its amorous feelings, just as dry wood needs fire. In the eyes of experts, 80% of the factors that determine the taste of coffee come from raw beans and 20% depend on roasting. Baking is divided into deep, moderate and shallow three kinds of baking, these three baking methods themselves are not high or low, or the coffee beans themselves are suitable for what kind of baking method, the key lies in the baking method. If the technique is wrong, even the best beans will be scrapped. The most difficult thing about baking coffee is the best time to stop, which depends on how the roaster captures the characteristics of coffee beans. This should be judged by experience and pay attention to the changes in temperature, color, sound, aroma, shape and luster of beans.

All coffee tastes bitter and sour. Generally speaking, the lighter the degree of roasting, the stronger the sour taste of coffee. The deeper the baking degree, the stronger the bitterness. Deep roasting is suitable for coffee with strong sour taste. Light roasting is suitable for bitter coffee, which can release the sour taste, ease the excessive bitterness and balance the taste. However, coffee has an expiration date, no matter how superb the roasting method is, drink it up within two weeks after roasting, otherwise the flavor will be greatly reduced.

The extract of the decisive game

After the correct picking, production and baking, we came to the last two gates of import, grinding and extraction. The two processes complement each other. The thickness of the grinding determines the way in which coffee is extracted. Generally speaking, fine powder is the easiest to extract the essence, so it takes the shortest time, which is extracted immediately after being washed quickly with water of 90 degrees Celsius, using an Italian machine and a mocha kettle. For moderate grinding, it is usually drunk by the family. Preheat coffee cups and coffee pots to make the coffee more fragrant. The water temperature is generally 85 to 90 degrees Celsius, mainly hand flushing pots, dripping pots and siphon pots. As for the coarse powder, it should be on the French kettle, which takes the longest extraction time, and the water temperature is also between 85 and 90 degrees Celsius.

The standard of good coffee

Despite the fact that there are a lot of professional terms used to judge coffee, which are comparable to red wine, you can ignore them all, and your tongue is the first judgment. Mr. Liang said that if the coffee is really good, it is actually very simple: it tastes comfortable, clean, odorless, pure aroma, and the most important thing is that the coffee beans should be fresh.