First, put pork in water, add onion Jiang Shui, then add soy sauce (not too much will turn black), monosodium glutamate, an egg white, thirteen spices, a little sugar to extract fresh salt, sesame oil, and a scallion. (Depending on the amount of meat) Break the eggs. Once you add a little water starch to make pancakes, it is difficult to flatten the filling and roll it well, and there is a little egg oil on the edge of the pancakes. It won't come apart.