Take a proper amount of flour, add egg yolk and water, milk and a little sugar, mix well together and knead into dough for later use. Then beat a few eggs into egg liquid, then add milk and sugar into egg liquid and stir well. Then cut the dough into even noodles by hand or knife, and put it into an egg tower mold, using a small cup without a mold, but it must be heat-resistant. Squeeze the noodles inside and make a layer of skin evenly. Finally, pour in the egg liquid, pour in the medium-cooked (to prevent overflowing when heating) and bake in the oven.