Fried cold powder is a famous traditional characteristic snack in kaifeng, capital of song dynasty. There is a poem to praise: "ice to scrape a leaky fish through, crystal clear qinqin teeth after cold. Flavor tone thick or light with your will, just cool to the acid." There are many kinds of cool powder, such as starch of legume, rice or sweet potato, etc., diluted with appropriate amount of water into paste, and condensed into a lump after cooking, commonly known as "cool powder". Such as bollo bean powder, green bean powder, sweet potato powder, etc. The cold powder is made from sweet potatoes or mung bean starch, with soy sauce, spring Onions, ginger, garlic and sesame oil. The entrance is hot, fresh and tender, and the cool powder is smooth, tender and not broken. He has performed abroad several times and is very popular. The preparation method is to mix the flour paste with water into a thin paste, boiling water into a mature paste to cool, that is, cold powder. Stir-fry cool powder is hair cool powder is main material, assist with bean sauce, green onion, ginger, add oil to make and become. The hot incense is tender and caramelized.