Coffee technology teaches you to tell whether it is freshly ground coffee.

1. To buy coffee place, have not seen coffee, will smell coffee aroma. Coffee is so easy to smell. If it is an old coffee bean, the oil contained in the coffee will deteriorate and will not emit aroma, so the aroma is a symbol of coffee quality. The fresher the coffee, the better the taste. To enjoy delicious coffee, you must start with the right purchase and clever preservation.

2. To drink coffee is usually to buy fried beans or buy ground powder. Most places that sell coffee beans will sell several coffee blends prepared by their own shops. When buying, you can buy beans directly if you have a grinder, if not, you can ask the store to grind coffee beans on the spot.

3. Now there are household grinders on the market, such as Jialefu, Pulsmart and other supermarkets have bean grinders, the price is between 400-700 yuan, and coffee brewing appliances can be made with ordinary tea pots. 4. Coffee beans should not be purchased in large quantities, old coffee beans in the fat exudation, will make the taste of coffee acid.

When buying coffee beans, you can put coffee beans in your mouth and bite them. Fresh coffee beans will have a clicking sound, and old coffee beans will not make a sound. The amount purchased at one time is limited to the amount consumed by a family in a week. After buying it home, it should be immediately put into the can and sealed. It can be ground only once each time. Generally, the amount of coffee beans in a cup of coffee is about 10-15g.

5. Coffee beans grinding methods are generally divided into fine grinding, grinding, coarse grinding three, according to the coffee brewing method, namely siphon, dripping, boiling. Siphon with fine grinding, dripping with grinding, boiling with coarse grinding, to sell coffee beans, as long as the waiter told which method to brew, you can get the corresponding powder.

6. The coffee powder ordered is placed in a small bag, and the powder is best in a hard state. Coffee powder can not stand high temperature and humidity environment, a contact with the air, the fragrance will spread, once the bag is opened, it should be wrapped as before, put in the can, put in the refrigerator preservation effect will be better. The amount of coffee powder purchased is limited to the amount consumed by the whole family in a week. Retail stores sell coffee powder in units of 50g, 100g, 150g and 250g.

7. Whether coffee beans or coffee powder are absolutely prohibited to purchase in advance, each time to buy a small amount, although troublesome, but you can enjoy the pure taste of coffee.