With dry cut powder, dry cut powder cross-section diameter of about 3 millimeters, soak in water (soak for more than an hour) and then wait for use, rice flour is the basis. Secondly, prepare the soup, that is, the screw soup, the real screw powder is no screw, the flavor of the rice noodle base comes from the screw soup. First of all, buy the screws, to live, soak in water for 2 days, cannon screws in the water into a piece of iron, used to promote the screws spit mud, at the same time can inhibit the northern people afraid of the parasites in the body of the screws; Schistosoma, so that the screws meat is sweet. Snail suck clean, take out, with an iron embedded cut off the tail of the screws, generally in that easy to gather silt, but also convenient screws cooked when sucking. Drain the screws water, open the pan and heat the oil, shoot garlic, ginger, garlic, dried red chili peppers, perilla, stir fry flavor (try to add more of these ingredients) poured into the screws stir fry, add salt, chicken essence, oyster sauce, cooking wine, to 4 minutes cooked, add water and simmer on low heat for more than 2 hours. The key to the soup is to add water when adding ingredients, each family has a secret recipe, a good soup recipe is to spend money to buy, the general 1,000 or 2,000 dollars it, do it yourself at home do not have to buy, I used 13 incense instead of, not too tasty, better than nothing. Once the soup is done, put it on the stove and simmer it slowly. The characteristics of the soup is that the oil should be sufficient, the chili pepper should be spicy enough to see the red chili oil on top of the soup. Here are the side dishes, 1, fried bean curd 2, pickled bean curd 3, fried fungus and the famous sour bamboo shoots 4, fried peanut rice 5, cut tiny diced dried radish 4, pickled mustard greens, the north is called snow greens. After preparing these things can start to do screwdriver. First boil water in a pot, under the vegetables, to green color, cabbage, lettuce, rapeseed (north of the Yangtze River is not planted) can be, vegetables 8 minutes cooked out, dripping a little oil. And then under the soaked rice noodles cooked fish out of the pressure on the vegetables, and then add the side dishes, and finally dripping into the screw soup can be.