What is the smell of defective coffee beans? How do coffee defective beans come from?

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It is true that the original flavor of coffee beans can determine the tempering trend of a cup of coffee, but after roasting, the flavor of each coffee bean will be sublimated and condensed into a number of sweet and mellow coffee beans. The most important treasure of coffee beans is its flavor, highly organized and dense fat, which protects acids and sugars, and the key to this treasure is baking.

The technology in baking beans includes understanding the professional knowledge of boiler volume replacement rate, roaster material, heat energy conversion mode and so on to prolong the best flavor period, but not insipid. The most difficult point is that baking is an irreversible chemical reaction, so there is a saying that "the better baking method will always be baked in the next pot."

If you want a cup of delicious coffee, what should you pay attention to?

Although the taste will change due to various conditions, it is always the same to check from the source.

Therefore, the quality of raw beans is very important.

Don't think disapprovingly how dangerous a defective bean can be.

For boutique coffee, it is really "rat shit" is not too much, for the taste, roasting, health level, is the destruction of the master.

If you have a lot of coffee on hand, please don't be distressed and lose it.

Defective beans (Quaker) refer to beans that are maldeveloped or contaminated in the process of refining.

Most coffee beans will be mixed with defective beans and produce a peculiar smell, which will also affect the aroma and brewing quality of coffee.

Source of defective bean odor:

1 chemical odor

2 mildew taste

3 earthy taste

4 fermented flavor

5 overripe taste

6 immature flavor

7 potato flavor

For farmers, the quality of coffee beans is directly related to the price, so these defective beans must be removed one by one.

After harvesting coffee cherries, coffee cherries are first put into the sink and the immature fruits are filtered first. When coffee enters the Dry Mill process, a specific gravity sorter is used to pick out immature coffee beans, then an electric screening machine is used to pick out foreign bodies and defective beans, and finally manual sorting is used to ensure that no defective beans are mixed.