01 - Whisk together the eggs, milk, salt, and white pepper in a large bowl until smooth and well combined.
02 - Add bean sprouts, carrots, green onions, mushrooms, bell pepper, and diced protein to the egg mixture. Stir thoroughly to distribute ingredients evenly.
03 - Heat 2–3 tablespoons vegetable oil in a large nonstick skillet or wok over medium-high heat until shimmering.
04 - Scoop approximately 1/2 cup of egg mixture into the pan for each patty. Flatten gently with the back of a spoon. Fry 2–3 patties simultaneously, depending on pan size.
05 - Cook each side for 2–3 minutes until golden brown and crispy. Flip carefully with a spatula and finish cooking the opposite side. Transfer to a paper towel–lined plate. Repeat with remaining mixture, adding more oil as needed between batches.
06 - Combine chicken broth, soy sauce, oyster sauce, sesame oil, and white pepper in a small saucepan. Bring to a gentle simmer over medium heat.
07 - Whisk cornstarch with cold water in a small bowl until smooth to create a slurry. Stir the slurry into the simmering sauce and cook for 1–2 minutes until thickened and glossy.
08 - Plate the crispy Egg Foo Young patties hot. Drizzle generously with the savory gravy and garnish with additional sliced green onions if desired.