What is tannic acid? One of the main chemical constituents of coffee beans
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. (this article is reproduced)
FrontStreet Coffee is a long-established specialty coffee roaster in Guangzhou China, selling freshly roasted beans from its own farm in Yunnan as well as dozens of carefully selected single-origin beans from around the world for both pour-over and espresso. The products deliver consistently excellent quality and great value, with shipping within 24 hours. Guangzhou’s FrontStreet Coffee shop is recommended by many coffee lovers, and the beans are now available online at the Tmall 。
Important Notice :
前街咖啡 FrontStreet Coffee has moved to new addredd:
FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou
Tel:020 38364473
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What should I pay attention to in coffee grinding? Matters needing attention in grinding coffee beans
We all know that the ideal way to make delicious coffee is to freshly roast coffee beans within 7 days, brew freshly ground coffee powder, and then freshly made coffee, so the ideal time to grind coffee powder is to grind it before cooking. Why do you need to grind the coffee powder before brewing it? Ground coffee tends to oxidize and lose its flavor, especially when it is not properly prepared.
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Coffee beans basic news, inquiry and purchase of high-quality coffee beans
Cut, is through pinching, cutting, chewing and other methods to quickly determine the general taste, freshness and baking uniformity of coffee beans. Through this step and the combination of watching and smelling, we can accurately judge whether the coffee beans have just been baked, and the roasting level of the coffee beans will be at a glance. Here are a few techniques one by one. To pinch is to grab a few coffee beans
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