Fine Coffee Science explains the Preservation of Coffee

There is a knack for distinguishing the freshness of coffee beans

Nose smell: fresh coffee beans smell strong fragrance, otherwise tasteless or bad smell.

Look at it: good coffee beans are complete in shape and full in size. On the contrary, the shape is incomplete.

Hand pressure: fresh coffee beans are fresh and crisp, and the fragrance comes out when they crack.

Color: dark black coffee beans, the coffee brewed has a bitter taste; yellow coffee beans, the coffee brewed has a sour taste.

Good coffee beans: neat shape, bright color, roasted by single stir-fry. After brewing and cooking, it is mellow and full of stamina.

Bad coffee beans: different shapes and incomplete individuals. After cooking, it is light and fragrant, not sweet enough.