Coffee knowledge popularization, coffee storage and handling

Coffee spoils very quickly after roasting. Once the aroma is gone, the coffee is completely stale. Roasted coffee deteriorates much faster than fried tea. Oxygen, moist air and sunlight can cause the taste and aroma of coffee to disappear instantly, so the coffee grinder used in the coffee shop is sealed, and the barista should always make sure to cover the lid to prevent the coffee from spoiling. Fresh coffee tastes better, reflecting the natural sweetness of coffee beans. Ground coffee powder deteriorates faster, which is why we only grind a certain amount of coffee before making coffee, rather than grinding it all at once. You'd better use up all the coffee powder stored in the powder compartment within an hour, and the real quality pursuer will ask the barista to use up all the coffee powder within 2 minutes.

The ideal storage temperature of coffee is 7 ℃. Remember, never put coffee in the refrigerator, because too low temperature will make the inside of the coffee crystallize, thus absorbing the moisture inside the coffee and making the coffee taste bad. You'd better store your coffee in a cool, dry place and stay away from the sun. Never put coffee with other strong foods or chemicals. The best way is to store the coffee in a sealed plastic bag. If it is not sealed, the coffee will absorb all the flavor around it like a sponge.

When buying coffee, make sure it is in a sealed bag. The sealed bag must be equipped with an one-way vent to help coffee release carbon dioxide (coffee usually releases a certain amount of carbon dioxide after roasting). You also need to pay attention to the baking date on the bag. Coffee should not be stored for more than 6 weeks after roasting (some people think it is 3 weeks). The surface of old coffee beans will condense grease. If you don't smell the pungent aroma when you just open the bag, the bag of coffee beans is likely to have gone bad. The best way is not to buy too much coffee at a time, the amount you buy depends on your actual use.

Coffee Storage Tips:

1. To keep coffee beans fresh, you need to stay away from: sun, air, water, heat, coffee bags with grease

two。 Be careful not to use transparent bags to store coffee. Sunlight will speed up the deterioration of coffee beans.

Coffee purchase Tips:

1. View baking date

two。 View origin (country, region)

3. Check the variety of coffee beans (guaranteed to be 100% Arabica coffee)

4. Check to see if the bag has an air outlet.

5. Don't buy too much at once

6. It is best to buy coffee beans directly from coffee roasters or boutique coffee shops.

7. Do not buy coffee in transparent packaging

8. Try different kinds of coffee each time to train your sense of taste

9. Note that coffee can also be too fresh! Coffee needs to rest for a few days after roasting to form the final taste, which is particularly important for making espresso

10. Buy whole coffee beans, go home and grind them yourself.