Why can you feel a little sweetness when tasting black coffee?
Most people only taste bitter, sour and astringent coffee. In fact, raw coffee beans contain about 50.8% sugar. After baking at high temperature, most of the sugar will be converted into caramel. This caramel effect brings a unique tea brown to the coffee, forming a source of aroma and bitterness, while the remaining sugar leaves some sweetness. In addition, it is released when roasting quality coffee beans.
The tannin, combined with brown caramel, also produces a slightly bitter sweetness.
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Italian coffee
Espresso means Italian espresso. Espresso is Latin for under pressure and Italian for fast. Italians invented the first espresso machine in the 19th century. It is characterized by the use of steam pressure, in high temperature, high pressure instant coffee extraction. Espresso is a precise blend of coffee beans
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Why do some coffees taste sour?
Varieties such as Mocha, Colombia, Guatemala and Costa Rica. The degree of roasting is also related to the acidity of the coffee, usually the lightly fried coffee beans also contain organic acids, so the coffee washed out tastes sour, while the deep-fried coffee beans, because the high temperature of the fried beans has released the organic acids contained in the coffee beans, so the acidity of the coffee is low. The coffee is
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