Coffee usually just needs to be put in the refrigerator.

There are two kinds of coffee powder. If the instant coffee powder is sealed at room temperature, it can be directly brewed with hot water, with cream and sugar.

If it is ground coffee powder, it can be stored in the refrigerator to better preserve the flavor.

Brewing methods: filter paper brewing, siphon coffee boiler, electric coffee pot brewing, etc. Are very common.

See you in detail

/html/cf-2- 13.htm Preservation of coffee

There is a knack for distinguishing the freshness of coffee beans.

Nose smell: fresh coffee beans have a strong smell, otherwise they are tasteless or have an odor.

At first glance: good coffee beans are complete in shape and rich in size. On the contrary, the shape is incomplete.

Hand pressing: Fresh coffee beans are pressed to be crisp, and when they are cracked, there will be fragrance floating out.

Color: Dark coffee beans with darker colors, and the brewed coffee has bitter taste; Yellow coffee beans, the brewed coffee is sour.

Good coffee beans: neat shape, bright color, single frying and baking. After brewing, it is mellow and has sufficient stamina.

Bad coffee beans: different shapes and incomplete individuals. It is fragrant after brewing, but not sweet enough.

Roasting of coffee beans

Common distinguishing methods are cinnamon roast, city roast, city roast, Vienna roast, Italian roast and French roast.

Choosing raw beans, mastering the characteristics and structure of the roaster and patiently repeating experiments are the only way for the roaster to succeed. The changes of air and humidity in the working environment, the proper timing of raw materials entering the pot, the precise control of heating program and time, how to adjust the exhaust valve, cooling system and program, and even the calculation of the moving speed of each coffee bean in the boiler have fully endowed coffee with active vitality.

Preservation method of coffee beans

The heavier the beans that are not baked or fried, the better. Once the coffee beans are roasted, the aroma will gradually disappear, and after two weeks, the aroma will be gone. So buy a small amount at a time, or buy a small amount of ground coffee. If you order coffee in a coffee shop, you'd better buy green beans. Choosing the right package or container and storing it in the right space is the way it is, but fresh coffee is extremely sensitive to the storage environment. In recent years, experts strongly recommend the use of aluminum foil packaging material with one-way exhaust valve (opaque), which has been well received and recognized by domestic and foreign manufacturers, blocking the invasion of oxygen and discharging carbon dioxide, greatly prolonging the honeymoon period of tasting fresh coffee. As for storage, I personally think it only needs to be placed in a cool place where it is not easy to get wet and the sun is not direct. Refrigeration or freezing is not absolutely ideal. The excessive shrinkage of fiber, the coagulation of benign grease, the odor in the refrigerator and the temperature difference between high and low during extraction are all thought-provoking.

A suitable place to store coffee.

Coffee should be stored in a dry and cool place and never put in the refrigerator to avoid moisture absorption. Coffee beans and ground coffee can be frozen. The only thing to pay attention to is that when taking coffee out of the freezer, it is necessary to avoid melting the frozen part and making the coffee in the bag wet. Americans think coffee is better in the refrigerator. But not more than a month. They take out the coffee beans they want to drink from the refrigerator, grind them before thawing, boil them and drink them.

Coffee storage packaging

Tin cans can keep the aroma of coffee for a long time. Plastic bags are also acceptable, but the storage capacity is smaller than tin cans. In foreign countries, coffee beans are sold in tin cans or plastic bags. Vacuum packaging is more conducive to the storage of coffee and makes the original taste last longer.

Once the oil-proof or tinfoil-packed coffee bag is opened, coffee beans or coffee powder should be put into a sealed jar immediately; Coffee powder will not be moldy soon, but it will absorb the smell in the air like coffee beans.

Storage of instant coffee

Instant coffee bag is a product recently developed by roasting and grinding coffee. Thin aluminum helps to retain the original flavor of coffee to the greatest extent.