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Ten types of defective beans

Ten types of defective beans

Before selecting defective beans, raw beans need to be screened in order to make the beans uniform in size. You can use three different sizes of special custom screen, or you can use the metal screen sold in general horticultural shops, but pay attention to the size. The purpose of sieving is to separate the size of beans and remove impurities. The next step is hand-selected. In order to improve the efficiency of hand selection, some props must be used, including

2014-09-18
Introduction of Ten types of defective beans

Introduction of Ten types of defective beans

Before selecting defective beans, raw beans need to be screened in order to make the beans uniform in size. You can use three different sizes of special custom screen, or you can use the metal screen sold in general horticultural shops, but pay attention to the size. The purpose of sieving is to separate the size of beans and remove impurities. The next step is hand-selected. In order to improve the efficiency of hand selection, some props must be used, including

2014-07-22
Identification of coffee beans graded defective beans in coffee producing areas of Kenya

Identification of coffee beans graded defective beans in coffee producing areas of Kenya

◎ grades defective beans by the number of points, which is the earliest method of grading, and is still in use in many parts of Brazil. The method of identification is to randomly take 300 grams of samples and put them on black paper, because black paper can best avoid reflection. Then, examined carefully by the professional appraiser, find out the defective beans in the sample, and accumulate different scores according to the types of defects. For example, one black bean counts as one.

2016-06-04
SCAA Fine Coffee grading defective Bean Standard

SCAA Fine Coffee grading defective Bean Standard

All black beans / part of black beans appearance features: black opaque raw bean cup sensory features: diversity: fermentation taste, sharp choking taste, turbidity, mildew taste, sharp sour taste, chemical irritation and other single or multiple odors mixture. Cause: excessive fermentation, leading to microbial invasion and infection. Appearance characteristics of whole sour beans / partial sour beans: raw beans have a yellow, yellowish brown or reddish brown appearance, usually

2015-11-10
Carefully filter

Carefully filter "sick problem beans"

Defective beans, as the name implies, are defective beans, bad beans, just like bad apples. There are a variety of reasons and many kinds of coffee. Here is a detailed description of the things that affect the quality of coffee. A variety of factors can cause defective beans. Defective beans can be produced as large as the growing environment of coffee trees and as small as the process of harvesting and processing raw beans. But don't.

2014-09-16
Introduction of Ten types of defective beans in the Common sense of Fine Coffee

Introduction of Ten types of defective beans in the Common sense of Fine Coffee

Before selecting defective beans, raw beans need to be screened in order to make the beans uniform in size. You can use three different sizes of special custom screen, or you can use the metal screen sold in general horticultural shops, but pay attention to the size. The purpose of sieving is to separate the size of beans and remove impurities. The next step is hand-selected. In order to improve the efficiency of hand selection, some props must be used, including

2015-04-17
A defective variety of coffee beans.

A defective variety of coffee beans.

Raw beans are divided into several grades according to quality standards, which vary from place to place, basically according to size and shape. The higher the grade, the better the quality. At present, as the domestic coffee raw bean market has just started, the coffee raw beans sold are mainly low-grade futures beans. People usually have a lot of defects in the raw beans they get. Defective coffee beans are quite harmful, including mutated beans.

2014-12-29
Methods and skills of manual selection of coffee beans and defective coffee beans

Methods and skills of manual selection of coffee beans and defective coffee beans

I agree that apples don't taste different because of their size, but when it comes to roasting coffee beans, they all have to be heated anyway, and it doesn't matter if the coffee beans are different in size. Coffee beans harvested from the same tree, regardless of size

2015-09-14
Teach you how to select defective coffee beans from raw coffee beans

Teach you how to select defective coffee beans from raw coffee beans

In the selection of defective beans, the most difficult to judge are fermented beans and unripe beans. At first glance, some are slightly yellow, or only slightly different, which makes it difficult to judge whether they should be removed or not. However, as long as there is hesitation, it should be eliminated without thinking. In short, the most important thing is to use the most perfect hand selection to make delicious coffee.

2014-09-02
Grading of raw coffee beans

Grading of raw coffee beans

At present, there are three main rating criteria for raw coffee beans, and different countries adopt different rating methods according to their own production conditions and national conditions (not all coffee producing countries adopt the same method). Let's introduce these three popular rating methods. One: the reason for the emergence of such a classification standard according to the altitude of the coffee producing area is mainly because of the high level.

2014-07-22
Hand-selected coffee beans and defective coffee beans

Hand-selected coffee beans and defective coffee beans

I agree that apples don't taste different because of their size, but when it comes to roasting coffee beans, they all have to be heated anyway, and it doesn't matter if the coffee beans are different in size. Coffee beans harvested from the same tree, regardless of size

2014-09-29
Teach you how to determine the freshness of coffee beans

Teach you how to determine the freshness of coffee beans

Defective beans, as the name implies, are defective beans, bad beans, just like bad apples. There are a variety of reasons and many kinds of coffee. Here is a detailed description of the things that affect the quality of coffee. A variety of factors can cause defective beans. Defective beans can be produced as large as the growing environment of coffee trees and as small as the process of harvesting and processing raw beans. But don't.

2015-09-09
How to manually select coffee beans and defective coffee beans

How to manually select coffee beans and defective coffee beans

I agree that apples don't taste different because of their size, but when it comes to roasting coffee beans, they all have to be heated anyway, and it doesn't matter if the coffee beans are different in size. Coffee beans harvested from the same tree, regardless of size

2015-06-06
SCAA Fine Coffee Grading All kinds of defective beans

SCAA Fine Coffee Grading All kinds of defective beans

Whole black beans/partial black beans Appearance characteristics: black opaque raw beans Cup sensory characteristics: diversity: fermented flavor, sharp choking flavor, turbidity, mildew, sharp sour flavor, chemical stimulation flavor and other single or multiple odors mixed. Cause: Excessive fermentation, leading to microbial invasion infection. Whole/partial sour beans Appearance characteristics: Raw beans have a yellow, tan or reddish brown appearance, usually

2015-11-03
Coffee skills how to manually select coffee beans and defective coffee beans

Coffee skills how to manually select coffee beans and defective coffee beans

I agree that apples don't taste different because of their size, but when it comes to roasting coffee beans, they all have to be heated anyway, and it doesn't matter if the coffee beans are different in size. Coffee beans harvested from the same tree, regardless of size

2015-03-20
Coffee training-what is hand-picked beans

Coffee training-what is hand-picked beans

Hand selection: is the step of removing impurities and bad beans attached to delicious coffee beans. Coffee beans are often mixed with foreign bodies, such as stones, sawdust, pieces of metal, grains of soil, fruit of trees, and sometimes coins and glass.

2014-05-16
How to select coffee beans by hand?

How to select coffee beans by hand?

Hand selection: is the step of removing impurities and bad beans attached to delicious coffee beans. Coffee beans are often mixed with foreign bodies, such as stones, sawdust, pieces of metal, grains of soil, fruit of trees, and sometimes coins and glass. In coffee production areas, specific gravity bean selector (using wind power to classify according to particle size and weight) or electronic bean selector (removing defective beans according to color) will be used to prevent it.

2015-05-11
How to manually select coffee beans and defective coffee beans

How to manually select coffee beans and defective coffee beans

Coffee beans harvested from the same tree, regardless of particle size, mature or immature, are all baked in the same pot, resulting in uneven baking.

2014-06-20
Coffee common sense how to select coffee beans by hand and coffee defective beans

Coffee common sense how to select coffee beans by hand and coffee defective beans

I agree that apples don't taste different because of their size, but when it comes to roasting coffee beans, they all have to be heated anyway, and it doesn't matter if the coffee beans are different in size. Coffee beans harvested from the same tree, regardless of size

2014-11-13
What is the basic knowledge of coffee to choose beans by hand?

What is the basic knowledge of coffee to choose beans by hand?

Hand selection: is the step of removing impurities and bad beans attached to delicious coffee beans. Coffee beans are often mixed with foreign bodies, such as stones, sawdust, pieces of metal, grains of soil, fruit of trees, and sometimes coins and glass. In coffee production areas, specific gravity bean selector (using wind power to classify according to particle size and weight) or electronic bean selector (removing defective beans according to color) will be used to prevent it.

2014-11-22
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