The black stuff is the internal organs and metabolic substances of silkworm pupa, silkworm pupa, synonym of small bee child, original silkworm pupa, late silkworm pupa. Silkworm chrysalis is the silkworm spit silk cocoon in the cocoon into the pupa. Silkworm pupa is not only delicious, nutritious, but also the extraction of a variety of chemical raw materials.

Silkworms spit silk cocoon after four days or so, will become chrysalis. The body shape of the pupa is like a spindle, divided into the head, chest, abdomen three body segments. The head is very small, with compound eyes and antennae; the thorax has thoracic feet and wings; the bulging abdomen has nine body segments. The color is coffee-colored.

Professional workers are able to distinguish male and female from the lines and brown dots on the abdomen of the silkworm pupa. When the silkworm just pupated, the body color is yellowish, the pupa body is tender and soft, gradually it will become yellow, yellowish brown or brown, the pupa skin is also hard.

Expanded Information:

The domestic silkworm is a kind of economic insect originating from China. Long history, is the world's largest fragrant silk origin, because the silkworm pupa is the main by-product of silk, China can produce more than 500,000 tons of fresh silkworms each year.

But because of the lack of technology, a considerable period of time silkworm pupae are basically used as word material, resulting in a certain waste of resources.

Silkworm pupae are suitable for boiling, frying, dry stir-fry, stir-fry and other cooking methods, common dishes are crispy pupae, boiled pupae, brine pupae and cumin pupae and so on. But no matter what kind of practice, must be fully heated before eating, boiling before other cooking.