Ingredients: 500ml milk, 2 egg yolks, 0/00g sweet potato/kloc-0, 50g corn starch, steamed sweet potato and pressed into mud. Pour all the ingredients into a pot and stir evenly, turn on low heat and stir until it becomes thick, pour into a bowl, cover with plastic wrap and refrigerate for 3 hours, uncover the film, cut into pieces and put them into an air fryer, and brush a layer of egg yolk liquid 180 15 minutes on the surface.