Coffee beans used to be considered defective beans? How do you make a good cup of coffee?

Professional coffee knowledge exchange More coffee bean information Please pay attention to coffee workshop (Weixin Official Accounts cafe_style)

Is coffee male or female? Is the male or female coffee better? How do you make male coffee?

Without screening, throw raw beans into baking, baked beans, no matter how good the technology can not cook delicious coffee. Because coffee beans are often mixed with impurities and bad beans, and bad beans we call "defective beans." So this little knowledge is quite important, but how many kinds of defective beans are there?

Green coffee beans Green beans Defect type

● Full Black

Characteristics: Whole or partial raw beans appear black opaque appearance. Reasons for formation: blackening is caused by excessive fermentation, such as fermentation or odor, dusty smell, mildew and sour taste.

● Whole sour beans. Full sour (partial Sour)

Characteristics: Beans are identified as sour beans when they are yellow-brown or reddish-brown.

Reasons for formation: sour beans are in the process of harvesting and processing, beans are fermented and contaminated by bacteria.

● Fungus Damage

◎ Features: Mildewed beans have yellow brown reddish brown dots at the early stage, indicating that they have been eroded by spores of bacteria.

Reasons for formation: Mildewed beans are usually caused by mold spores on beans, which are stored at a certain temperature and humidity after harvest, which will cause mold growth to infect beans.

Professional barista training| Which are defective beans? Teach you how to choose defective coffee beans

● Insect damage

Features: Diameter 0.3-1 . smm, usually on the inside of the coffee bean.

Reasons for formation: pests are the most serious in coffee agriculture, when the fruit is still on the tree when the insects have been drilled into the fruit breeding.

·Broken beans

Characteristics: Broken beans usually have a dark red area due to oxidation.

Causes: Cracked beans are usually cracked by incorrect calibration machines and excessive friction or extrusion when processing pulp or dry processing.

● Immature beans

Characteristics: Unripe beans can be distinguished by pale and yellow-green skin or white spots on the skin.

Reasons for formation: There are many reasons for incomplete maturity, improper harvesting of immature fruits and late ripening of berries at higher altitudes.

Professional barista training| Which are defective beans? Teach you how to choose defective coffee beans

● Deformity beans

Features: Abnormal shape, slightly enlarged off-center incision. Reasons: growth defects, physiological factors.

● Shell

Characteristics: Shell beans are formed by internal or external separation deformation at the same time.

* Cause of formation: mainly due to genetic variation.

● Floater

Characteristics: Floating beans are particularly white or discolored in appearance, while raw beans appear spotted.

Reasons for formation: For processing, this defect is caused by improper storage or drying, which usually leads to discoloration or low density of beans.

Professional barista training| Which are defective beans? Teach you how to choose defective coffee beans

After reading all kinds of broken defective beans, you should know how important it is to have a good cup of coffee. A cup of coffee without beans will definitely have a great impact on the overall quality, but the flavor of coffee may have a little bit of blemish, or it may be some very bad taste.

Are coffee beans defective?

Peaberry, also known as Peaberry or caracoli, is a variant of coffee beans. In fact, male beans are a defect, officially speaking, coffee beans that cannot develop normally. The causes are usually insect damage, drought, or malnutrition of coffee trees.

Some coffee drinkers believe that peaberry has a stronger aroma because normal coffee beans should have two seeds, but male coffee because one of the seeds is poorly developed, making the other extra fat, and because it gets double nutrients, it tastes better than female coffee, and because of its rare nature, it is sometimes sold at a high price. In contrast, in different coffee-growing regions, the beans are sometimes classified as defective beans and discarded.

If the whole batch is round beans, we classify it as not defective beans. If the whole batch is flat beans, a small number of round beans should be eliminated.

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