How to choose coffee beans how to distinguish the defective beans in coffee beans

There are many varieties of coffee in fact, raw coffee beans have some defective beans. What is called defective beans? how to tell if the coffee beans have lost their fragrance or smell stale, it means that the coffee beans are no longer fresh and are not suitable for purchase.

Freshly fried coffee beans are not suitable for immediate consumption and should be stored for a week to completely release the gas from the beans.

Generally speaking, the best drinking period for coffee is a week after stir-frying, when the coffee is the freshest and the Aroma is the best.

In addition, the purity of coffee beans is also another consideration. The expert candidate for coffee is not necessarily looking at the size of the particles, but grabbing a handful of individual coffee beans (Regional Coffee), about dozens of portions, to see whether the color of each single bean is the same, and whether the particles are similar in size and shape, so as to avoid buying shoddy products disguised as mixed beans. But if it is a synthetic bean (BlendedCoffee), it is a normal phenomenon that the size and color are different. And heavy heat and medium-deep roasting will cause coffee beans to produce oil, but lightly roasted beans that produce oil (oily food) indicate that they have gone bad, not only reducing aroma, but also astringent and sour taste. In short, when buying added coffee, we should pay attention to its freshness, aroma and stale flavor, and the ideal purchase quantity is that it can be finished in half a month.