The method of making old friend noodles is like this: the noodles should be made of wet alkaline noodles, and the noodles made of dry noodles are not authentic. When cooking noodles, first put the alkaline noodles in boiling water until they are 70% cooked, and then remove the clear water to remove the sticky paste from the noodle soup. After clear water, they will become stiff and tough. First, stir-fry the prepared ingredients such as garlic paste, fermented soybean, pepper and sour bamboo shoots in hot oil until they are 80% cooked, then stir-fry semi-fat and lean meat slices (minced meat is best), add bone soup to boil, and add noodles to cook until they are 80% cooked. As for Laoyou powder, there is no need for the process of "seven boiling and eight boiling". Sometimes when the wet noodles in the shop are sold out, the powder is poured into the cooked noodle soup of an old friend to cook. Spicy, sour and delicious.