Fresh roasting of coffee beans is so important! Simply try to find out whether the coffee beans are fresh or not.

For professional baristas, please follow the coffee workshop (Wechat official account cafe_style)

Many people are used to refreshing themselves with a cup of strong coffee in the morning, and Meanna is one of them. Although coffee is a daily necessity, it seems that I am a poor man who has the money to go to Starbucks every day to help me, so I have no choice but to make my own coffee and save some money. When you make your own coffee, some people like to use instant coffee powder because it is convenient enough, while others like to use coffee beans and feel that they have enough flavor. If you choose the latter, it proves that you are a person who pursues coffee Quality. Are you learning how to test whether the coffee beans you buy are fresh enough?

The foreign website techinsider lists four simple ways to easily pick out Fresh coffee beans. I've seen it together!

The surface of coffee beans should be full of luster

Coffee beans are rich in oil, fat and fatty acids, so after roasting, the oil of coffee beans will be forced out and covered on the skin of coffee beans, making the coffee beans full of luster.

Pick up the coffee beans and there will be residue in your hands.

If there is residue left in a handful of coffee beans, it means that the coffee beans have been freshly roasted and that they are fresh enough oil.

There is an exhaust hole in the sealed bag.

When coffee beans are roasted at high temperatures, they release a lot of carbon dioxide when they cool. This kind of gas can last for days or even weeks, and this situation is called degassing. When the degassed coffee beans are put into a sealed bag, carbon dioxide will be discharged continuously, so an exhaust hole is needed. If the bag is not sealed, it will be blown up like a balloon and may even explode.

So if the bagged coffee beans do not have an exhaust hole on the bag, that is to say, their coffee beans are not too fresh and do not need a lot of exhaust.

Finally, we can teach you a way to simply tell if the coffee beans are fresh enough:

Put the coffee beans in a sealed bag, squeeze out the air, and let stand overnight.

If the coffee beans are freshly roasted in the past 7 to 10 days, the sealed bag will expand due to carbon dioxide emissions.

If the coffee beans are not so fresh, the sealed bag will be flat.