There are four "natural enemies" that coffee beans preserve: air (especially oxygen), temperature, humidity, and light.
The coffee beans bought back should be preserved, mainly to avoid these four "natural enemies". ”
1. Check the roast date when buying coffee
The most important thing about coffee beans is freshness. Freshly roasted coffee usually takes 4-7 days to grow the coffee, after which the flavor of the coffee will be at its best, after which the flavor will slowly decrease. Beans that have been roasted for 3 months are counted as the best tasting period.
Check the roast date of the coffee you want to buy before you buy it. The coffee in our shop is generally roasted within 3 days, which can guarantee the freshness of the coffee.
2. Store coffee in a dry, cool, airtight place
Humidity, light, and heat can all cause coffee to spoil. Therefore, coffee needs to be stored in a dry, cool, and dark place.
Coffee is hygroscopic, which means it absorbs substances from the environment, including oxygen, various odors, and moisture. It's best to stay away from foods with strong odors or avoid staying in environments with a lot of odors.
If you choose to open the bean bag when you go home, you should try to store it in sealed or even opaque cans and boxes to prevent direct light and keep the coffee cans away from heat sources and places with high humidity.
*Prompt:
The lid should be closed tightly after each use to limit the spread of the coffee aroma and to prevent air from entering and making the coffee taste bad.
3. It is generally not recommended to put coffee in the refrigerator.
Many people believe that storing coffee at low temperatures can help it last longer. This method may be suitable for vegetables and tubers, but it is less suitable for coffee because it absorbs the odors of other foods, resulting in the loss of aroma and flavor characteristic of pure coffee.
Ground coffee, in particular, is more likely to absorb other scents around it.
In addition, too low a temperature in the refrigerator can cause condensation, which can affect the quality of the coffee.
4. Use a package with a check valve
A special coffee bean packaging with a one-way vent valve designed to release carbon dioxide from the coffee package, preventing oxygen from entering the coffee from the outside and thus preventing oxidation of the coffee (coffee beans are raised with the help of a one-way vent valve to remove carbon dioxide).
Some precautions when opening a bean bag:
Squeeze out all the air and close the bag! Once you open the bag and take out the coffee, air rushes in. If the bag is closed immediately, the incoming air will not be able to escape and will damage the coffee. Therefore, we can roll up the coffee pouch by hand, squeeze out all the air, and then lock the pouch tightly.
If your bean bag has a one-way valve, you can use tape to seal the valve after raising the beans. It's a little thing that helps to better preserve the flavor of the coffee, but that valve helps release the carbon dioxide inside the bag and allows the aromas of the coffee to fly away. The check valve helps prevent the bean bag from exploding when the coffee is too new or too much (freshly roasted coffee beans release carbon dioxide). And after the carbon dioxide is discharged, this thing is no longer very necessary.
5. Buy enough coffee and grind it at home
Buy enough for 1-3 months to drink. Try not to store coffee for half a year or more. The longer coffee is preserved, the more susceptible it is to the environment.
6. In some special cases, coffee can be stored in the refrigerator
- There is too much coffee left over and it will not be used up quickly in 2-3 weeks
- The coffee you buy is very expensive and rare, and you want to save it for later consumption.
Place some of the coffee beans in bean bags, foil wraps, food freezer bags, or opaque glass jars (out of the way of air) and place them in the refrigerator.
*Prompt:
Note that if you do need to store coffee in the refrigerator, you should avoid storing it with different foods to avoid flavor crossover affecting the taste of the coffee. Once the coffee is taken out of the refrigerator, use it all up, do not freeze it again, or store it in a cool place away from direct sunlight.