The reason why you should put the noodles in the refrigerator: the noodles must be fermented for a long time at a low temperature before they can be fluffy and crispy. Normal twenty degrees or so is very difficult to ferment successfully, so put in the refrigerator is the fastest way to chill, and there is no possibility of spoilage.

Oil stick, is an ancient Chinese noodle, long hollow fried food, crunchy and tough, one of the traditional Chinese breakfast. According to the Song History, during the Song Dynasty, Qin Hui persecuted Yue Fei, and the people expressed their anger by deep-frying a noodle food similar to doughnuts (fried hinoki). Similarly, the origin of fried noodles is much earlier than the Song Dynasty, dating back to before the Tang Dynasty, the specific period shall not be verified.

As early as during the Northern and Southern Dynasties, the Northern Wei agronomist Jia Siqing. In its "Qimin Yaojutsu" recorded the production of fried food. Qimin Yaojutsu" said: fine ring cake, a cold utensils, Cui Mei. During the Tang Dynasty, the poet Liu Yuxi also mentioned cold utensils in his "Good Words". In "Campsis Fishing Hidden Series of Writings", it is mentioned that Dong Po wrote poems and fugues about food and drink, and they were often very skillful, such as "Lao Tao Fugue" and "Bean Porridge Poem". And the poem "Cold utensils" cloud:? Hand rubbed to the jade several seek, blue oil fried tender yellow deep, night to spring sleep without weight, pressure hank good people wrapped around the arm of gold. Cold utensils are also twisted heads, from Liu Yuxi's "Good Tales". However, this kind of food should be shaped like a woman's arm-twisting gold, similar to a sprinkle, not a doughnut. Doughnuts should be another innovation of fried noodles after the Southern Song Dynasty.