Coffee beans roasting knowledge delicious coffee comes from roasting

What kind of coffee would you like? Whether it is a three-in-one simple brewing coffee bag or a self-grinded professional coffee, the diversity of coffee fascinates many people, and there is even a saying that a person's personality can be seen from the coffee he drinks. it can be seen that there are really many kinds of coffee.

How on earth did these many kinds of coffee come into being? If you are a beginner of professional coffee, I am sure you will be troubled by the names of various roasting levels of coffee. Yes, the diversity of coffee comes from roasting. For example, coffee names such as city,full city,French,Espresso produce different roasting colors because of the roaster used and the region where they are produced. Even if the roasted coffee beans look the same, coffee may have a completely different flavor, regardless of the type of coffee beans selected, the heat and method of roasting, or the length of baking time. Many reasons are the main factors that determine the final coffee flavor. Roasting can be said to be a major knowledge in the coffee field.

In the process of roasting, coffee beans will produce a series of complex chemical changes. The whole roasting process will take about 20 minutes to half an hour. At first, it will go through about 15 minutes of baking. The green coffee beans will lose their original humidity in this step, burst like popcorn, and the whole coffee beans will expand more than twice as much and appear light brown after light stir-frying. After that, according to the type of coffee beans and the degree of baking required, further increase the baking time, in this step, the color of coffee beans will change to a variety of different shades of brown. After the final baking is completed, it can be cooled rapidly with cold air or directly cooled by spraying water, and the baking procedure can be completed.

Roasted coffee beans are mainly divided into four categories, namely, shallow, medium, deep and extra-deep. Lightly fried coffee beans appear light brown, most of them have a strong smell, brewed coffee has a high acidity, but mellow may not be able to perform so well. The medium-fried coffee beans are very mellow, but they can also retain most of the acidity. The deep-fried coffee beans are dark brown, and the acidity in the coffee is replaced by a slight bitterness, sometimes producing a spicy taste. The deeply fried beans are black and have a bitter taste of carbon ash, but the relative mellow taste is not so strong.