The dried bean dregs from the soymilk can be reused. Put the salt, onion, flour, egg, and bean dregs together in a bowl. Don't be too dry. If you are a little wet, you can fry the pan. When frying, press the dough with a spatula into a cake. Be careful, be sure to fry. When the oil side turns over, press it again.
It’s almost like this.
Fragrant, but not brittle.