The crab yolk is not the egg of the crab, and although its composition is basically the same as that of the crab egg, there is a fundamental difference between the two. Crab yolk does contain undischarged egg cells, but there are other crab organs, glands, tissue fluid and other substances, not simply crab eggs.
When the crab yolk becomes bigger and bright orange in color, the gonads of the female crab have matured, and what is discharged from the body at this time is the crab eggs, while the egg cells in the gonads are still part of the crab yolk.
Crab yolk is rich in protein, phospholipids and other nutrients, and is nutritious, but also contains high levels of oil and cholesterol.
Crab roe can be made into many delicacies: crab roe congee, and so on. Shanghai Tang is also famous for its delicious snack - crabmeat xiao long. As the name suggests, the main ingredient is crab roe. There are two kinds of crab roe: river crab roe and sea crab roe.
Crab roe can be fried, roasted, and also used for brining and stuffing.
Crab roe is bright orange or deep yellow in color, clean and free of impurities, fresh and dry enough for the best. Crab roe is oily and should be kept in a sealed container.
Related Knowledge:
According to the "Food Scripture": female pike crabs have the effect of appetizing and moistening the lungs, tonifying the kidneys and strengthening the yang, and nourishing the blood to activate the blood. Among them, the nutritional value of the crab yolk is the highest. It is rich in trace elements, collagen, calcium, phosphorus and other essential nutrients, "gold in the sea".
The male crab has a spermatophore, and the white substance inside is the sperm, and the sperm and sex organs of the male crab are crab paste.
Crab paste may also be fat. Because male crabs gradually accumulate fat and grow into crab paste (commonly known as crab oil) in preparation for winter. When you peel off the shell of a male crab, you can see white, sticky stuff among the shell and lump of crab, which is crab paste (crab oil). When cooked, the crab paste becomes translucent. The more crab paste there is, the stronger the male crab is.
In the wild, the crab yolk of female crabs grows most plump in the ninth month of the lunar calendar, and the crab paste (crab oil) of male crabs grows most thick in the tenth month. Therefore, in the past to eat crabs, there are "nine female and ten male" said. Meaning: in September of the lunar calendar to eat female crabs, in October of the lunar calendar to eat male crabs