Basic knowledge of boutique coffee Why is coffee bitter?
Why is coffee bitter? This problem has plagued scientists for decades.
Now, scientists have narrowed down their research and targeted two chemical molecules. At the annual meeting of the American Chemical Society, scientists reported that the two bitter chemical molecules were produced during the processing of coffee, a discovery that could revolutionize the coffee processing industry.
Thomas Hoffman of the University of Technology in Munich, Germany, and his colleagues once again separated the brewed coffee. After analysis by mass spectrometer, Hoffman identified one of the molecules, chlorogenic acid lactone, which is a decomposition product of chlorogenic acid (found in almost all plants). Hoffman's team then prepared a series of different coffees to determine the content of chlorogenic acid lactone. Although lactone will only produce mild bitterness in mild and moderate roasted coffee, the secondary decomposition products of lactone will produce strong bitterness if the coffee beans are roasted for a long time.
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Basic knowledge of Coffee how much do you know about coffee?
Drinking coffee has become a fashion choice for more and more people. How much do you know about coffee if you often go to coffee bars? Don't get a reputation for being old-fashioned and out-of-date because of small details. See which of the following will make you flawless, and get in the right seat. ● first sip: the first sip of coffee is the key. When coffee comes up, don't be busy adding seasoning or stirring it, drink it first.
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Fancy coffee recommends 9 kinds of world-famous coffee
1. Mocha coffee shows a strong New York flavor in a small cup. The preparation method: add 20ml chocolate syrup and very strong deep-fried coffee to the cup, stir well, add 1 tablespoon cream to float on top, peel some chocolate powder for decoration, and finally add some cinnamon sticks. two。 Mocha mint coffee: pour warm coffee and cold milk over cold cream
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