Why is there a yellow ah in crabs? What is the yellow underneath the crab

In autumn, the climate gradually changes from cool to cold, and the crabs gradually grow stronger. The digestive glands and ovaries of the female crab grow into crab roe to prepare for the need for reproduction and fertility in the winter and the following year (crab roe becomes crab roe in spring). At this time, peeling off the crab shell, you can see that there are many yellow, sticky things in the crab shell and crab lump, which is raw crab roe.

When cooked, the crab roe turns red, and the darker the red, the stronger the crab. In order to prepare for winter, male crabs gradually accumulate fat and grow into crab paste (commonly known as crab oil). When you peel off the shell of a male crab, you will see a white, sticky thing in the same place, which is crab paste (crab oil).

When cooked, the crab paste becomes translucent. The more crab paste, the stronger the male crab.

Crab roe and crab paste are not only delicious, but also nutritious, and are the essence of crabs.

In the wild environment, in the ninth lunar month, the crab roe of the female crab grows the fullest; In October, the crab oil of male crabs grows at its thickest. Therefore, in the past, when eating crabs, there was a saying of "nine females and ten males". Meaning: female crabs should be eaten in the ninth month of the lunar calendar, and male crabs should be eaten in the tenth month of the lunar calendar.

I'll give you something to eat, and I won't have anything to eat without you.

Because one female is male. Well, that's how it should be.

1. Crab roe: After the crab is cooked, open the belly crab cover, and the yellow and orange substances in it are the crab roe of the crab, which is the unique ovaries, egg cells and a small part of the internal organs of the female crab, which is rich in protein, fat and phospholipids.

As well as calcium and other minerals, it is not only delicious and delicious, but also has high nutritional value.

2. Crab egg bag: If it is a yellow substance on the outside of the abdomen after the crab, it may be the crab egg bag of the crab. The eggs laid by the female crab will adhere to the hind abdomen of the female crab and incubate, and the crab egg bag will be formed, so it is recommended to remove the crab egg bag before eating.

Extended information: Crabs belong to the class molluscs, decapods, and are crustaceans whose bodies are protected by a hard shell and breathe by gills. Taxonomicly, it is related to shrimp, lobster, hermit crab.

It is a similar animal. The vast majority of species of crabs live in the sea or near the sea, but some inhabit freshwater or land. Common crabs are pike crabs.

Offshore pike crab, blue crab.

and Chinese mitten crab (river crab, hairy crab, clear water crab) and so on.

The mother crab is a round umbilicus, the eggs are full in September of the lunar calendar, and the crab roe is fragrant and delicate; The male is a sharp umbilicus, and the yellow fat paste is white in October, and the taste is plump and round.

1. Choose crabs to be fresh and high-quality.

The eyes of the crab are the most sensitive to external influences, so when choosing, the eyes of the crab are first touched, and the reaction is more violent. You can also flip it with its belly facing up to see if it can flip it over on its own to judge whether it is healthy and fresh.

2. Hold the crab in your hand, the heavy feel is the fat and sturdy good crab, and the light feel is mostly the bad crab with less dry and lean meat.

Good crabs have a cyan and firm back and a plump and heavy belly. It is also possible to carefully investigate the crab legs, which are firm and difficult to pinch crabs are the fatter.

3. Investigate the abdominal navel of the crab, the more black the crab is, the more plump the crab, quietly open the abdominal navel, and the faintly visible yellow is better.

4. Place the crab in the sunlight or light backlight investigation, through the sunlight, the edge of the crab cover is opaque, it is clear that the crab is full, if the translucent gap is visible, the crab is empty.

Before spawning, there is basically yellow, after giving birth it is gone, generally look at its weight, there are yellow full and heavy, no yellow light.

If there is not enough time to steam the female crab, even if the shell of the crab has turned red, but when you open the female crab, you will find that the crab roe is black in the middle and yellow in the periphery, this is because the crab roe has not been fully steamed.

Put the crab into the pot and continue to steam, steam over low heat for 5-10 minutes, the crab roe is completely steamed, take it out at this time, open it to see, the crab roe has completely turned orange yellow.

It is generally recommended that when steaming crabs, steam them for 15-20 minutes after boiling the water in the pot, and if they are relatively large crabs, they need to be steamed for a few more minutes as appropriate.

2.Probably crab stomach.

If the crab is opened, the crab roe is black and yellow, the black substance is gelatinous, and it is located on the leading edge of the dorsal shell**, which is a triangular bony pouch with dirty sand inside, then it may be the crab's stomach.

Generally, when the crab is fasting, the stomach will appear smaller, and after eating, the stomach will swell, and it will look more black gelatinous.

What to do: This situation belongs to the normal category, and the black gelatinous substance can be eaten normally after removing it by hand.

It may be that the mother crab is waiting to give birth.

The crab roe is black, and the boundary between the crab roe and the black substance is obvious, then it may be the black substance produced by the female crab after mating, indicating that the female crab is in a state of waiting to give birth, and this situation generally begins to appear in November of the Gregorian calendar.

Crab roe is the ovaries and digestive glands in the crab's body, and this black substance is also part of the large crab egg cells and can be eaten normally.

Probably dead crabs.

If you accidentally buy a dead crab, then the steamed crab roe may also turn yellow.

Because crabs belong to scavengers, their food is complex and diverse, most of the crabs have toxins and parasites in their bodies, therefore, the crabs will be invaded by toxins and parasites within ten minutes after death.

Crab roe is a collection of ovaries and digestive glands in the body of a female crab. Crab roe is not a crab egg, although the composition is basically the same as crab eggs, but there is an essential difference between the two.

Crab roe does contain egg cells that have not been excreted from the body, but there are other crab organs, glands, tissue fluids and other substances, which are not just crab eggs. When the roe grows in size and turns bright orange, the gonads of the female crab have matured, and the eggs are produced and excreted from the body, and the egg cells left in the gonads in the body are still part of the crab roe.

5. The yellow substance in the crab is what we often call crab roe.

Crab roe is the ovaries and digestive glands in the crab's body, and the taste is very delicious, but the crab roe is not the crab's egg, although the composition is basically the same as the crab's egg, but there is a difference between the two.

6 crab roe is flat and sweet, which is rich in protein, phospholipids, fats, calcium, phosphorus and vitamins and other nutrients, but at the same time contains a higher content of oil and cholesterol, with appetizing and moistening the lungs, tonifying the kidney and strengthening yang, nourishing blood and invigorating the blood, and do the crab roe also has anti-tuberculosis effect, eating crab roe helps to get pure tuberculosis **, generally speaking, it is better to eat freshwater crab for medicinal purposes.

7. Crab roe contains egg cells that have not been excreted from the body, but also contains other crab organs, glands, tissue fluid and other substances, rather than just crab eggs.

When the crab roe becomes larger and orange, it means that the gonads of the female crab have matured, and what is excreted from the body at this time is the crab eggs, and the egg cells left in the gonads in the body still belong to the crab roe.

8. There are two kinds of crab roe: river crab roe and sea crab roe, and the taste of river crab roe is better than that of sea crab roe, which is suitable for the general population to eat.

People with coronary heart disease, high blood pressure, arteriosclerosis, and hyperlipidemia should eat less or no crab roe.

Crab roe should not be eaten too much, eating too much will lead to abdominal pain and diarrhea.