The flavor of coffee comes from the roasting of coffee | how to distinguish between common problems in roasting: raw and charred

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Basic knowledge of coffee beans

What determines the quality of a cup of coffee? Good brewing skills and utensils are important, but high-quality coffee beans are the most important element.

So what kind of coffee beans are high-quality coffee beans? Is to retain the aroma and taste of coffee as much as possible when brewing, when brewing can completely exude her flavor flavor.

The flavor of coffee comes from its roasting.

The aroma and taste of coffee are produced after roasting. In the roasting process, the water of the coffee beans is slowly released, the weight becomes lighter, the color gradually deepens, and the aromatic oil is slowly released. In addition, a large amount of chlorogenic acid originally contained in raw beans will gradually disappear with the baking process, releasing good-smelling fruit acid, and its taste varies with the baking time. In the following picture, you can see the change in the shape of coffee beans during roasting.

Coffee roasting is an overall dehydration process, some coffee beans, suitable for shallow roasting, because of the environmental characteristics of their own habitat, as well as the accumulation of nutrients, so that coffee can form a similar melon and fruit aroma. Shallow and correct baking can maximize the aroma of flowers and fruits, and some people who are not good at roasting will mistakenly think that as long as they are roasted too lightly, they can achieve the sense of fruit. in fact, in the process of water baking, they need to reach a certain temperature and take a specific time to change from the astringent smell of grass to the aroma of flowers and fruits. Therefore, the smell of grass is mostly unbaked.

Common problems in baking: raw and coke.

These two are the most common!

Jiasheng: it often appears in medium and light roasted coffee

Jiao: it often appears in deep and medium roasted coffee.

Of course, it is also very common to be raw and scorched!

So how to tell the difference?

It's the smell of grass, the smell of grass, just after mowing the lawn. If you smell it when you're grinding coffee, you'll probably get it, and when you drink it, you'll undoubtedly get caught.

Jiao: (eat charred food at home, bitter and charred smell and taste, deep baking will generally appear tar smell, and even some people may smell a little smelly, a well-known coffee chain store is deep-roasted coffee beans)

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