Coffee knowledge Coffee Professional words-tannin
Tannin, one of the main chemical components of coffee beans, accounts for about 7% of the total chemical composition of coffee beans.
After extraction, tannic acid will turn into a yellowish powder and easily dissolve in water. Once heated, it will decompose to produce pyrosylic acid, making the taste of coffee worse.
Because of this, a cup of brewed coffee will lose its taste and taste if it is not drunk immediately, which is why there is a saying that "coffee should be drunk while it is hot".
It is generally believed that the duration of a cup of coffee is 10 minutes. If you want to, you can try whether the taste of the same cup of coffee is the same every minute, and 10 minutes later, the taste of the coffee will be much different from that when it was first brewed.
- Prev
Coffee utensils introduce 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.
- Next
Common sense of Coffee Why use Coffee Powder Press
Why use a coffee powder press? We all know that when using an espresso machine, the hot water is brewed at about 9 atmospheres (of course, this is not a fixed value, there are 12 atmospheres or more), and the pressure is very high when the water penetrates the coffee cake. the water is inert. What is inertia, that is, water will be worn from the weakest part of the coffee cake
Related
- Beginners will see the "Coffee pull flower" guide!
- What is the difference between ice blog purified milk and ordinary milk coffee?
- Why is the Philippines the largest producer of crops in Liberia?
- For coffee extraction, should the fine powder be retained?
- How does extracted espresso fill pressed powder? How much strength does it take to press the powder?
- How to make jasmine cold extract coffee? Is the jasmine + latte good?
- Will this little toy really make the coffee taste better? How does Lily Drip affect coffee extraction?
- Will the action of slapping the filter cup also affect coffee extraction?
- What's the difference between powder-to-water ratio and powder-to-liquid ratio?
- What is the Ethiopian local species? What does it have to do with Heirloom native species?