Roasting is the "key" coffee base in coffee processing
The components of coffee quality (such as the quality and range of acidity and bitterness of coffee, the intensity and quality of aroma) are determined at the raw bean stage, although roasting can only adjust the taste within the range of characteristics of raw beans, but roasting has a greater impact on the taste of coffee than grinding and extraction, grinding and extraction is to transfer the roasted active ingredients to the coffee liquid, which has nothing to do with creating flavor.
During the roasting process, coffee bean cells mutate and carbohydrates, amino acids, proteins, lipids and minerals react. At 185240 ℃, sugars combine with amino acids, vitamin C and proteins for caramelization, which is the so-called "Mena reaction". The final product is yellowish brown, bitter sweet glycosylamine and melanin-like pigments. Thus giving more aroma to the coffee and ripe beans. The aroma of raw coffee beans contains about 250 different volatile molecules, while after roasting, as many as 800 volatile molecules can be found in coffee beans. Therefore, roasting is the most important link in coffee processing.
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Vietnamese coffee pot concocted by Didi pot
Drinking coffee is a daily habit of Vietnamese. Vietnamese cafes are very common, not high-spending places, and ordinary ones are only a few yuan RMB. Vietnamese coffee is not brewed in a coffee pot, but is extracted into coffee by a special drip filtration method, which is used to pass the time. This kind of dripping filter is called dripping pot in Vietnam. This kind of coffee seems to be the only way to make coffee.
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Comparison of Arabica beans and Robusta beans comparison of coffee beans
It is not difficult to distinguish between Arabica beans and Robota beans. You can easily tell the difference between Arabica beans and Robota beans by their appearance. The former is slightly oval and slender, and the central line (Center Cut) is S-shaped, while the latter is round and fat, and the central line is almost straight. For a detailed comparison, please refer to the table below, where Robusta contains almost twice as much caffeine as Arabica.
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