Nostoc flagelliforme is black and looks like hair. Li Yu, a drama theorist in the late Ming and early Qing Dynasties, called it "the first product in Hexi". Nostoc flagelliforme is widely distributed and grows in Shandan County, Zhangye City, Gansu Province. People have long had eating habits. After the reform and opening up, with the development of trade circulation, Shandan Nostoc flagelliforme has gradually stepped out of Shandan, enjoying a good reputation in the north and south of the country and becoming a treasure of Shandan.
Natural Nostoc flagelliforme has unique functions of detoxification, clearing away heat, regulating lung, resolving phlegm and regulating stomach and intestines. Nostoc flagelliforme is homophonic for "getting rich", and it is better to cook with sweets, which is deeply loved by Cantonese people. In the 1980s and 1990s, it was bought in Shandan in large quantities, and its processing and packaging became the top grade for cooking delicacies and giving them to relatives and friends, and also became a business card for Shandan products.
Extended data:
Dietary precautions and taboo people
1, Nostoc flagelliforme is cold. People with spleen and stomach deficiency and loose stools should not eat it at ordinary times. People with rubella, joint pain, internal injuries and other diseases should eat it carefully.
2. Because the massive collection of Nostoc flagelliforme is one of the bane of sandstorm, the State Council has issued a notice, asking all localities to prohibit the collection and trading of Nostoc flagelliforme, and artificial cultivation is another matter.
Tips for purchasing Nostoc flagelliforme: Authentic Nostoc flagelliforme is black in color, light, slender and silky, curly and fluffy, with the shape of loose hair, no sludge and impurities, fragrant, slightly elastic when pinched by hand, and swells about 3 times after soaking in clear water. After soaking, it is still elastic when pulled by hand, and the entrance has a soft and crisp feeling.
Wig strips are thick and short, so they can't rise in water and can't be stretched out by hand after soaking. They are hard, and the entrance is not soft and crisp. Buyers should pay attention to identification to avoid being fooled. ?
References:
Baidu encyclopedia-Nostoc flagelliforme