A list of the contents of this article:

Will black beans fade?

Black bean skin contains natural pigment, soaking in water for a long time will fade, the color of the water deepens, which is normal. If it is just washed, the color fades or the water is very dark when soaking, it may be fake. The way to distinguish between good and bad black beans: high-quality black beans are full; green inside the beans means they are not yet ripe; if they are artificially dyed and peeled off, there will be impregnation marks inside.

It won't fade. The skin of black beans is black, while the kernels are white, or yellowish white. If the color fades and the kernels are yellow, they may be dyed and processed fake black beans. Black beans can be identified in three ways: look at their appearance. There are "little white spots" in the middle of the real black beans. And the "little white spot" of the dyed black beans will be dyed. Is to look at the bean clothes. The real black beans are peeled off and the inside is white.

It should be a little faded. (it should be said that the black beans will not turn black after soaking.) the organic black beans I bought at Carrefour will not fade. But Wal-Mart's is a little tarnished. And I read on the Internet that some MM said. When you buy black beans, peel them and have a look. If it's green, it's good. If it's yellow, it's not good. When you buy it in the future, you won't get any bad black beans.

What kind of black beans are good?

The black beans of Dandong, Jintan and Zhangjiakou are better. Dandong medicine black bean is green cotyledon black soybean with large grain, excellent variety and high nutritional value. Jiangsu Jintan next door incense, black silkworm mouth beans, large seeds, 100 grains weighing more than 30 grams, is a very valuable big black beans.

There are two varieties of black beans, black green beans and black yellow beans. The black skin green kernel bean seed coat is black, the kernel meat is blue and gets its name. This variety is so valuable, mainly rich in protein, vitamins, iron and other contents, high medicinal value, is a good tonic in traditional Chinese medicine. According to the theory of traditional Chinese medicine, it has medicinal uses such as nourishing yin and tonifying qi, nourishing eyesight, dispelling wind and preventing heat, promoting blood circulation and detoxification, and black hair.

Hebei Heidou No. 1 is rich in Hebei black beans from different black bean producing areas, which is a summer sowing variety with high yield and good quality. The plant growth period is about 107 days, and the specific price is 6-12 yuan / jin. From 010 to 1010, Jilin was rich in mung bean kernel black beans. The fruit ripens from December to March the following year. It is called black pearl green skin round grain. It has a small fishy smell, and the price is about 5 yuan per jin. Jilin Black Dou Shenchi Black Dou is a specialty of Shanxi Province.

Hebei Heidou No. 1 is rich in Hebei Heidou No. 1 from different black bean producing areas. The black bean here is a summer sowing variety with high yield and good quality. the growth cycle of the plant is about 107 days, and the specific price is 6-12 yuan / jin. Jilin Black Bean Jilin is rich in green kernel black beans. The fruit ripens from December to March of the following year. Its skin is black, kernel green, and the grain is round. It is called "black pearl". The smell of beans is small, and the price per jin is about 5 yuan.

Green heart black beans are divided into big black beans and small black beans, the general shape of beans are round, and is not very uniform. It is an improved variety, and its nourishing effect is slightly weaker. There are only small varieties of yellow-heart black beans, which are flat in shape and slightly oval. It is an old variety, before the medicinal black beans are yellow heart small black beans, its nourishing effect is stronger, especially the effect of invigorating the spleen and kidney is stronger.

How many kinds of black beans? How to choose a good black bean?

Green kernel black bean, also known as black skin green kernel bean or green heart black bean, gets its name because its outer skin is black and the inner seed kernel is blue. Green kernel black beans are divided into big black beans and small black beans, which are round in shape and different in size. Yellow kernel black bean, also known as black kernel bean or yellow heart black bean, is a small-grain black bean variety introduced from Japan.

When choosing black beans, we will encounter three different varieties: skin black meat yellow, skin black meat white, and skin black meat green heart. The old variety of black beans with black skin and yellow flesh, traditionally known as adzuki bean, is mainly used in medicine and has a long history. Black skin and green heart is a relatively new variety of edible black beans, which is more suitable for cooking. There is a difference in efficacy between yellow heart black bean and green heart black bean.

Look at the surface: authentic pure black beans, the particle size is not uniform, there are large and small, and the color is not pure black, some black, some red in black. Due to the natural wax on the surface of black beans, they will gradually fall off with the length of storage time, so do not buy black beans with grinding luster on the surface. Stir the black beans in the white vinegar. If the white vinegar turns red, it is a pure black bean. If the vinegar does not change color, it is a fake black bean.

How to distinguish the good or bad of black beans?

Observe the appearance: the appearance of high-quality black beans should be full, smooth and uniform in color. The color should be dark black, free of spots or blemishes. If there are cracks, damage or uneven color on the surface of black beans, it may mean that the quality of black beans is poor. Smell: high-quality black beans should have a light bean flavor, no other peculiar smell.

The real black bean, the skin is black, the color is natural, the surface is smooth, no peculiar smell, the color does not fade after washing and soaking, the skin is hard, not easy to boil. The skin of fake black beans has a sticky feeling, or strong color, not smooth, due to dyeing or soaking with industrial dyes, agents, there is a peculiar smell, after washing or soaking, the skin is soft, easy to rot when cooking.

Look at the surface: authentic pure black beans, the particle size is not uniform, there are large and small, and the color is not pure black, some black, some red in black. Due to the natural wax on the surface of black beans, they will gradually fall off with the length of storage time, so do not buy black beans with grinding luster on the surface. Stir the black beans in the white vinegar. If the white vinegar turns red, it is a pure black bean. If the vinegar does not change color, it is a fake black bean.

What kind of black beans is good?

1. The black beans of Dandong, Jintan and Zhangjiakou are better. Dandong medicine black bean is green cotyledon black soybean with large grain, excellent variety and high nutritional value. Jiangsu Jintan next door incense, black silkworm mouth beans, large seeds, 100 grains weighing more than 30 grams, is a very valuable big black beans.

2. There are two varieties of black beans, black green beans and black yellow beans. The black skin green kernel bean seed coat is black, the kernel meat is blue and gets its name. This variety is so valuable, mainly rich in protein, vitamins, iron and other contents, high medicinal value, is a good tonic in traditional Chinese medicine. According to the theory of traditional Chinese medicine, it has medicinal uses such as nourishing yin and tonifying qi, nourishing eyesight, dispelling wind and preventing heat, promoting blood circulation and detoxification, and black hair.

3. Dandong medicine black bean is considered to be a high quality variety because of its green cotyledons and large grain size. This kind of black bean is not only full of grains, but also has high nutritional value. Jiangsu Jintan produced next door incense, black silkworm and other varieties also enjoy a high reputation, their seeds are large, 100-grain weight more than 30 grams, belong to the very precious big black bean species.

4. Hebei Heidou No. 1 is rich in Hebei Heidou No. 1 from different black bean producing areas. The black bean here has high yield and good quality. It is a summer sowing variety. The growth period of the plant is about 107 days, and the specific price is 6-12 yuan / jin. Jilin Black Bean Jilin is rich in green kernel black beans. The fruit ripens from December to March of the following year. Its skin is black, kernel green, and the grain is round. It is called "black pearl". The smell of beans is small, and the price per jin is about 5 yuan.

5. Hebei Heidou No. 1 is rich in Hebei black beans from different black bean producing areas, which is a summer sowing variety with high yield and good quality. The plant growth period is about 107 days, and the specific price is 6-12 yuan / jin. From 010 to 1010, Jilin was rich in mung bean kernel black beans. The fruit ripens from December to March the following year. It is called black pearl green skin round grain. It has a small fishy smell, and the price is about 5 yuan per jin. Jilin Black Dou Shenchi Black Dou is a specialty of Shanxi Province.

6. Green heart black beans are divided into big black beans and small black beans. Generally, the shape of the beans is round and not very uniform. It is an improved variety, and its nourishing effect is slightly weaker. There are only small varieties of yellow-heart black beans, which are flat in shape and slightly oval. It is an old variety, before the medicinal black beans are yellow heart small black beans, its nourishing effect is stronger, especially the effect of invigorating the spleen and kidney is stronger.

Black beans, green core or yellow core?

1. There is little difference between yellow core black beans or green core black beans. There are only small varieties of yellow core black beans, which are flat in shape and slightly oval, while green core black beans are divided into big black beans and small black beans, which are generally round and not very uniform.

2. Generally speaking, the nourishing black beans are better than the yellow ones. In fact, the nutrition difference between black bean green heart and yellow heart is not very big. If you consider nutrition, both green heart black beans and yellow heart black beans are fine, but if you want to nourish them with black beans, the role of yellow heart black beans is stronger. The difference between the appearance of black beans green heart and yellow heart: green heart black beans are divided into big black beans and small black beans, generally the shape of beans is round, and is not very uniform.

3. Black beans are good for green hearts because they are rich in protein and vitamins as well as iron. Black beans with yellow hearts are not bad, but black beans with green hearts are better. Black bean is the black seed of soybean which belongs to Leguminosae.