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It was drizzling outside, the melody was playing inside, a cup of coffee and a piece of cake, and how comfortable life was. I also like to drink coffee while working and studying, which helps me to improve my concentration and keep good energy. However, it is not unusual for me to drink coffee that has changed in flavor or aroma, mostly because it is not properly preserved. I’m sure that you also want to know how long coffee lasts and how to preserve its flavor and aroma. This article would teach you how to preserve coffee for a long time and avoid spending more money on new coffee.

I: The shelf life of various coffees

Coffee is made from coffee beans. Coffee beans have a shelf life of two years if they are kept dry and unroasted. However, beans would quickly expire if they become damp. After roasting, the beans can be stored in an airtight container for up to a month at cool and dry room temperature. Coffee powder is ground from coffee beans and can be boiled and drunk directly. Due to the large contact surface with air, coffee powder is easy to oxidize, resulting in the aroma and taste of coffee are greatly affected. The best flavor period for ground coffee is usually two weeks. In addition, coffee powder wrapped in aluminum foil has a shelf life of 12 to 18 months.

II: The storage conditions of coffee

The main principles of coffee storage are: sealed, dark, room temperature or low temperature storage. Roasted coffee beans are easy to be oxidized, resulting in the deterioration of the oil and the evaporation of the aroma. Temperature, humidity, sunlight and other factors will accelerate the deterioration of coffee beans. High temperatures tend to evaporate the aroma of coffee and the beneficial substances in the coffee beans, so keep them cold and away from light.

If the sealed coffee has been opened, reload them into a new airtight canister or seal the bottle mouth with a special sealing tape, and then store them in a cool and dry place. Contrarily, if the coffee is unopened, it is recommended to put coffee in the refrigerator, because lowering the temperature will slow down the oxidation rate of the coffee. They are suitable for storage in a cool and ventilated environment, which temperature is between 18℃ and 22℃ and the humidity should not be lower than 54%.

III: The tips of preserving coffee

Coffee should be sealed and stored in the refrigerator, rather than stored randomly. The cool temperature in the refrigerat or can slow down the natural spoilage of coffee. Over time, the air in the refrigerator is cold and dry, which can easily evaporate the water in the beans, making them lose their fragrance.

An upturned container is better for storing coffee beans. The carbon dioxide released by fresh coffee beans is stored in the bottom of the container, forming an antioxidant layer that protects the beans. Hence, coffee beans can be stored for longer.

Finally, some baristas find that the temperature of coffee beans greatly affects the grinding effect. They proved that freezing and lowering the temperature of coffee beans makes the ground more uniform, which makes the coffee more palatable. Thus, get some frozen coffee beans and grind a cup of iced coffee.

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