How to distinguish the freshness of coffee beans by coffee technology

The way to check whether coffee beans are fresh is very simple. Generally, coffee beans are lightly roasted and deeply roasted. The two roasted coffee beans are in different states when they are fresh.

Light roast coffee beans are lighter in color. Fresh light roast coffee beans have no oil on the surface. After a period of time, the surface of coffee beans begins to produce oil. Light roast coffee with oil has already indicated that it is not fresh.

Deep-roasted coffee beans are darker in color. Fresh deep-roasted coffee beans have oil on the surface. After a period of time, the oil on the surface of coffee beans is absorbed into the beans. The surface of fresh deep-roasted coffee beans has no oil.

Smell: Fresh coffee beans smell strong, otherwise tasteless or bad smell.

See: Good coffee beans are complete in shape and full in size. Otherwise, the shape is incomplete.

Pressed: Fresh coffee beans are crispy when pressed, and the aroma wafts out when cracked.

Color: generally dark with black coffee beans, boiled coffee has a bitter taste. The color of the yellow coffee beans, boiled coffee with sour, of course, not exactly so, according to the variety of beans also have differences.

Good coffee beans: neat in shape and bright in color.

Bad coffee beans: not uniform in shape, and incomplete individual. After brewing, it is light and fragrant, not sweet enough.

Grinding: Fresh coffee beans because of strong static electricity and grease, grinding easy to adhere to the beans grinder outlet.

Brewing: Fresh coffee beans are rich in foam when brewed, and the foam will be layered with coffee grounds.

How to choose coffee beans?

Step 1: Choose fresh, tasty beans

Choose a cafe or store that will store coffee beans properly. It is not advisable to store coffee beans in the sun or in dirty containers. The correct way is to store them in a cool place.

Step 2: After roasting coffee beans, it is best to use them within a week

Buy freshly baked beans, and the principle of buying a small amount is the best policy. Otherwise, most of the purchases will lose their original flavor after a long time. If you calculate them in grams, buying 250 grams at a time is a regular and affordable amount.

Step 3: Keep coffee beans properly to lose flavor

The shelf life of baked beans can be stored for up to 2-3 weeks at room temperature, but it should be kept as close to air as possible and placed in a closed container. If more than 3 weeks, it is best to put it in the refrigerator for storage, and save it in a sealed jar. Not only is the quality decline rate less than half of the usual, but if you can ensure that you can drink delicious coffee every time, but you should pay attention to it every time you take it out. After the coffee reaches room temperature, open the sealed jar, otherwise it is easier to absorb water and deteriorate because of the temperature difference.