How to judge which coffee beans are good and which Arabica coffee beans are the best?

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How to judge a good coffee bean

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Greenish raw coffee beans

The appearance of normal raw beans is light green, if eaten by worms, brown spots may be moldy, yellow or black, which means mildew is more serious, or even acidified.

Surface grease

Shallow baked beans, whether freshly baked or placed for a long time, there is little oil on the surface. The oil in the deep layer of re-baked beans will be released to the surface after baking at high temperature, and it is normal for obvious oil to appear.

Aroma

Fresh shallow baked beans have fresh fruit, spice and honey aromas according to different producing areas, while deep baked beans have chocolate and drupe aromas.

Appearance

Fresh coffee beans have less moisture and hard tissue, so it is not easy to peel them in half with both hands, while stale coffee beans absorb moisture in the air for a long time, and the tissue is soft and easy to peel into two halves.

Design of breathable valve

Choose the packaging with opaque aluminum foil and one-way breathable valve on the surface mask, the gas can be discharged, and the outside air will not enter to make it stale.

Save date

It is recommended to buy about half a pound at a time and drink it within 1 month to avoid the production of aflatoxin.

Distinguishing coffee beans by hand flushing method

Put the freshly ground coffee powder into the soaked filter paper and use hot water at 93 degrees Celsius (about boiling water for 1 minute) in a ratio of 1:15 to water. Rinse the coffee powder clockwise from the center of the coffee powder surface for 3.5 minutes. If the beginning of the steaming process, the coffee powder has water absorption expansion situation to represent freshness.

In addition, if you want to tell whether the coffee beans you sell are good or bad, you might as well observe from the following points:

Is the glass window containing coffee beans directly exposed to the sun?

Second, is the air in the store too hot and wet?

Third, is the glass window soiled by coffee bean grease, shell shavings, etc.?

Is the overall storefront clean and bright?