Basic knowledge of boutique coffee what is tannin
Tannin is one of the main chemical components of coffee beans, accounting for about 7% of the total chemical composition of coffee beans.
After extraction, tannin will turn into a pale yellow powder and easily dissolve in water. Once heated, it will decompose to produce pyrochloric acid, which will make coffee taste worse.
Because of this, if a cup of brewed coffee is not drunk immediately, it will make the taste and taste lose, and therefore there is a saying that "coffee should be drunk while it is hot."
It is generally believed that the life span of a cup of coffee is 10 minutes. If you want to, you can try, every minute, the same cup of coffee taste is the same, and 10 minutes later, the coffee will taste different from when it was brewed.
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Basic knowledge of fine coffee what is a bean grinder
Coffee grinder refers to the important coffee utensils that turn coffee beans into various kinds of coffee powder, and it is also a necessary appliance in the home of coffee friends. Many friends who are new to coffee are not very clear about how to use the coffee grinder. Let's talk about how to use the coffee grinder. Coffee grinder is divided into: hand coffee grinder and electric coffee grinder. Both kinds of bean grinders have their own unique characteristics.
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Basic knowledge of boutique coffee what is a filter cup
The main difference of filter cup lies in the filter hole at the bottom of the cup. At present, there are mainly four kinds of filter cup: single-hole, double-hole, three-hole filter cup and V-shaped filter cup. The single-hole filter cup was invented by Mrs. Melitta in Germany, commonly known as Melita Cup. The single-hole filter cup is mainly used for medium-deep roasted coffee such as German roasting, while the shallow roasted coffee is easier to plug the filter hole. The three-hole filter cup is not easy to be blocked because of its many filter holes.
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