Roasted coffee classification _ roasted coffee beans need to put anything? how about roasted coffee beans

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Raw coffee beans basically can not smell any fragrance, roasted coffee can give off a unique aroma. After roasting in different degrees, different raw coffee beans produce different types and quantities of flavor substances. The roasting of coffee determines how many flavor precursors in raw coffee beans are transformed into flavor substances. Although coffee roasting has a long history, roasting technology is still a technology that is highly dependent on experience. There are many techniques for roasting coffee.

According to the equipment used in roasting coffee beans, the roasting methods of coffee can be divided into family-style hand-net roasting, roasting plate roasting, industrial intermittent roasting and continuous large-scale roasting machine.

● is divided into coffee roasting time, coffee roasting methods can be divided into high temperature short time roasting and low temperature long time roasting.

It was found that compared with long-term roasting at low temperature, roasting at high temperature for a short time had significant differences in aroma formation and physical properties of coffee. In general, overroasting reduces or retains the volatile aroma components of most coffee.

● is divided into coffee roasting speed, coffee roasting methods can be divided into fast roasting and slow roasting.

It was found that compared with slow roasting, fast roasted coffee had higher soluble solids content, higher chlorogenic acid content and higher volatile content, but slow roasting taste was lighter. When roasting quickly, the coffee beans expand larger and produce more carbon dioxide, and the oil is more easily transferred from the inside of the coffee to the surface of the coffee beans.

● according to the degree of coffee roasting, coffee roasting methods can be divided into light roasting, medium roasting and deep roasting.

Color is usually used to judge the roasting degree of coffee. In addition to color, some indexes can be used indirectly to judge the roasting degree of coffee, such as the change of PH value, free amino acid content, alkylpyrazine content, chlorogenic acid content and so on. It was found that the sulfur / roasting smell, soil smell and smoking smell of coffee increased gradually from shallow roasting to deep roasting.

● roasted coffee beans brand recommendation

The freshly roasted Arabica beans of Qianjie Coffee are fully guaranteed in terms of brand and quality. And more importantly, the performance-to-price ratio is extremely high, each pack of 227 grams, the price is only 70-90 yuan or so. According to the calculation of 15 grams of coffee beans per cup of coffee, a bag of coffee can make 15 cups of coffee, which costs only about 5 or 6 yuan per cup, which is recommended by conscience compared to the price sold in cafes for dozens of yuan a cup.

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