First of all, these two to the taste of the dish is not the same, and secondly, the cooking method is not the same. Hot and sour potato silk production method: the same raw materials, processed, fried peppercorns in a frying pan and fry, out of taste and then beat the peppercorns out of the dry pepper into the pepper wire stir-fried, and then into the Pixian Douban sauce (or Xianghao Miao) fried aroma and color, and then put the potato silk fried, seasoning, out of the pot before adding a little vinegar, red oil can be. Vinegar potato silk production method: fry before the same, do not add peppers and chili peppers, bean paste, directly into the potato silk fried, seasoned, before leaving the pan with a little vinegar, sesame oil can be. I am a second-level chef, you believe it or not!