The method of homemade scallion cake is 350 grams of flour, slowly add about 200 grams of boiling water, and finally beat a raw egg and knead it evenly. Put some oil on the dough in pairs and wake it for half an hour to make scallion cakes. Step 1 Cut the onion into small pieces, add 1 teaspoon of salt and 1 teaspoon of pepper, heat 50g of oil, and pour in the homemade onion cake. Roll the dough into thin slices and grease the onion cakes. The third step is to roll from bottom to top and then do it from right to left.