Nostoc flagelliforme is an algae plant, and it is named "Nostoc flagelliforme" because its color is as deep as hair. Nostoc flagelliforme, also called Mao Di, is highly sought after by compatriots in Hong Kong, Macao and Taiwan because of its homonym for "getting rich".
Nostoc flagelliforme contains more calcium than pork, cattle, sheep and other meat eggs, has the characteristics of low fat, has the function of clearing away heat and relieving depression, and is an ideal food for people with three highs.
Nostoc flagelliforme is loved by many people because it tastes better among rare edible plants in the desert. During the Han Dynasty, Su Wu was herding sheep in Mobei. It was mentioned in the previous literature: "Su Wu is not ashamed to stay in the Hu Festival, it is freezing in the snowy days, suffering for more than ten years, thirsty for snow and hungry for blankets, and herding sheep on the North Sea." Many people think that "carpet" is the carpet on the ground, but some people point out that the carpet here refers to Nostoc flagelliforme, because Nostoc flagelliforme is also called felted hairy vegetable, which was eaten by people in desert areas at that time.
Moreover, the shape of Nostoc flagelliforme is very strange. Nostoc flagelliforme is called Nostoc flagelliforme because it is black and thin, like hair, so it is called Nostoc flagelliforme, Nostoc flagelliforme and so on. When Li Yu, a famous gourmet in Qing Dynasty, visited Shaanxi, he also mistook Nostoc flagelliforme for hair and made a joke. However, after tasting the smell of Nostoc flagelliforme, he was full of praise for it: "The color of the dish is the most peculiar, but Nostoc flagelliforme produced in the Western Qin Dynasty is also not available in books such as Compendium of Materia Medica and Food Science."
The practice of Nostoc flagelliforme is also varied. In the Qing Dynasty, Xue mentioned in Su Wen lue: "Nostoc flagelliforme is cooked in clear soup, which is very good. Or simmer with shredded cabbage or shredded bamboo shoots, which is also clear. " The method of Nostoc flagelliforme mentioned here is indeed the most classic. Nostoc flagelliforme is rare now, and few people use Nostoc flagelliforme as a staple food to cook. Nostoc flagelliforme is usually used as an auxiliary material to cook soup with other ingredients. Personally, I think this should be a more appropriate approach. The dishes made by similar methods include Nostoc flagelliforme shrimp soup, Nostoc flagelliforme beef ball soup and so on.