Knowledge of coffee botany
According to our national standards, the classification of coffee is mainly divided into the following five varieties.
1. Small seed coffee, that is, Arabian species. It is native to Ethiopia and is the main cultivated species in the world. China is mainly distributed in Yunnan and Zhanjiang, Guangdong. This kind is cold-resistant, drought-resistant, mellow smell and good drinking quality, but it is easy to be infected with leaf rust.
2. Medium seed coffee, that is, Robasta species. It is commonly said to be native to the rainforest region of the Congo in Africa. The cultivated area is second only to the small seed species, and it is mainly cultivated in Hainan Province in China. This species is not resistant to strong light, wind and drought, and is weak in cold resistance. But it has strong disease resistance and is not easy to be infected with leaf rust. The product has strong drinking flavor and strong irritation.
3. Large seed coffee, that is, Liberian species. Originated in Liberia, Africa. The cultivated area is small, and there is also a small amount of planting in Hainan Province, which is suitable for growing in areas with low altitude and high temperature.
4. Esselsa. Native to the Charlie River Basin in West Africa, it has not been cultivated in China.
5. Alabata species. It is a new species cultivated by the French Coffee and Cocoa Institute in 1962, which was crossbred between tetraploid coffee and small seed coffee treated with colchicine in C ô te d'Ivoire, Africa.
The most suitable variety for cultivation in Yunnan Province of China is Arabian species (commonly known as small seed species).
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Roasting Theory of Coffee beans (1)
Grab a handful of coffee raw beans smell, there is always a pungent smell, very different from the impression of the charming smell of coffee. However, after roasting "fragrance" correctly, raw beans will emit the strongest aroma in the world. The small high-altitude Arabica coffee raw beans are like a warehouse full of chemicals. At present, scientists have identified more than 2,000 known ingredients, including 700 to 700.
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Roasting Theory of Coffee beans (2)
Let's talk about the definition of various baking degrees and taste. In the United States, the degree of roasting has long been defined by Cinnamon (shallow roasting), City (shallow roasting), Fully City (deep roasting) and Dark roast (heavy deep roasting, including Italian and French). However, the American preference for coffee flavor has always been strong in the west and light in the east, so on the west coast.
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