Mix marinade and combine with sliced beef; marinate several hours or overnight.

Stir together sauce ingredients and set aside; also prep vegetables and rice.

Stir together coating; drain beef from marinade and dredge in coating mixture.

Heat cooking oil in wok skillet and stir-fry the coated beef, draining it on paper towels as it browns and cooks through.

Add the scallions and chili peppers to a tablespoon oil in the wok skillet and stir-fry briefly until fragrant, then add the sauce.

Allow that to bubble and thicken while stirring then add the cooked beef and toss to coat.

Serve with rice.