Add the eggs, onion, mushrooms, bell pepper, bean sprouts and soy sauce together in a bowl and whisk to combine.
Add about 1/3 cup of mixture per pancake and cook for 3-4 minutes on the first side and 1-2 minutes on the second side.
Egg Foo Young Gravy:
1 cup chicken stock
2 tablespoons light soy sauce
1 tablespoon dry sherry
1 tablespoon cornstarch
Add everything to a small sauce pan and whisk well before the liquid heats up.
Cook and whisk until thickened.