The key to the selection of coffee beans when the coffee industry gradually introduces the trend

1. Smell

Put the coffee beans close to the nose and take a deep breath to see if you can clearly smell the aroma of the coffee beans. If so, it means the coffee beans are fresh enough. On the contrary, if the aroma is weak, or if the smell has begun to appear greasy (such as peanuts or nuts will appear for a long time), the coffee beans are not fresh at all. No matter how much effort you put into grinding and cooking such coffee beans, it is impossible to make a good cup of coffee.

2. Look

Spread out the coffee beans on your hands, determine the origin and variety of coffee beans, and make sure that the coffee beans are roasted evenly.

3. Peeling

Take a coffee bean and try to peel it off by hand. if the coffee bean is fresh enough, it should be easy to pull away, and it will have a crisp sound and feeling. If the coffee beans are not fresh, you will find that you have to work hard to get rid of a bean.

Peeling off the coffee beans also shows whether the firepower is uniform when baking. If it is uniform, the outer skin and inner layer of the beans should be the same color. If the color of the surface layer is obviously much darker than that of the inner layer, it means that there may be too much firepower during baking, which will also affect the aroma and flavor of coffee beans.

With the discharge of carbon dioxide, there is an equal amount of aromatic volatiles (volatile aromatics). In other words, there are some flavors that will dissipate if you don't drink the coffee beans for the first three days after stir-frying. The author further mentioned that stale beans not only "take away" the good taste, but also create a bad taste. So coffee on supermarket shelves is usually slightly oily. Because it usually takes months to bake and import from foreign countries to the shelves.

Generally speaking, the best drinking period for coffee is a week after stir-frying, when the coffee beans are the freshest and the Aroma taste is the best. Choose fresh coffee beans. When buying, pay attention to whether the color of the beans and the size of the particles are the same. Good coffee beans are shiny and have a strong aroma without being mixed with peculiar smell.

No matter what kind of coffee beans, freshness is an important factor affecting the quality. When shopping, grab one or two coffee beans in your mouth and chew them with a crisp sound (indicating that the coffee is not damp) and the fragrance of the teeth and cheeks is the top grade, but it is best to squeeze it with your hands to feel whether it is solid, rather than buying crispy coffee. If the coffee bean has lost its fragrance or smells stale, it means that the coffee bean is no longer fresh and is not suitable for purchase