Coffee common sense how many types of coffee are there? What is the quality of coffee beans?

The basic classification of coffee

Italian: espresso (Espresso) extracted by a semi-automatic machine. Use it as the base to make fancy coffee, such as mocha, latte, cappuccino and so on.

Single coffee: coffee from a single origin (black coffee, black coffee). Such as Blue Mountain Coffee, Costa Rican Coffee, Mantening Coffee, Brazilian Coffee and so on.

American coffee: the coffee made by electric drip coffee machine is relatively light in appearance and taste.

Quality identification of coffee beans

The quality of coffee beans is rated by cup testers (CUPPER) of several international coffee auction organizations, and is divided into five grades: grade 1 (Cup of Excellence): more than 84 points, small yield rare specialty coffee beans (winning at auction); level 2 (Specially): more than 80 points, special coffee beans, accounting for only 2% of the total global coffee bean production ratio; level 3 (Good grade commercial): high-quality commercial beans Level 4 (Basic Commercial): ordinary commercial beans, the above two can be found in chain fast food coffee shops; level 5: ungraded coffee beans (Off-grade), poor quality or defective coffee beans.

How to buy and preserve coffee

Freshness, altitude, soil, climate, variety and grower's consciousness are all factors that determine the quality of coffee beans. When choosing and purchasing coffee beans, try to choose good varieties and detailed naming (naming method: origin + manor + varieties + organic or not, the more complete the information is, the higher the grade of coffee beans is, but some varieties are scattered by farmers. There may be no manor name), coffee beans with high freshness, about 1500 meters above sea level, suitable planting environment and suitable treatment.

When preserving coffee, consumers should pay attention to: the general raw beans should not be preserved for more than 1 year; the best drinking period after roasting is 4 weeks, preferably in contact with the air for more than 3 days, the flavor changes obviously within a week, and tends to be stable after a week, and the shelf life is 3 months; coffee beans should be consumed as soon as possible after grinding into powder. if the drinking speed is slow, you can grind or divide the coffee powder into small parts.