– 12 ounces top sirloin, trimmed and thinly sliced against the grain

– 1 tablespoon cornstarch

– 1 tablespoon soy sauce

– 1 tablespoon Shaoxing wine (or substitute with mirin, dry sherry, or dry vermouth)

– ¼ teaspoon white pepper

– ½ small head broccoli, cut into bite-sized florets (about 1 cup)

– 1 large carrot, peeled and sliced into ⅛-inch thick strips (about 1 cup)

– 1 small red onion, thinly sliced (about 1.5 cups)

– ½ large red bell pepper, chopped into 1-inch pieces (about 1 cup)

– 3 to 4 mushrooms (white button or cremini), thinly sliced (about 2 cups)

– ½ small napa cabbage, chopped into 1-inch pieces (about 2 cups)

– Large handful of snow peas, trimmed (about ¾ cup)

– 4 teaspoons grapeseed oil or other high smoke point vegetable oil

– Kosher salt and white pepper, to season

– ¾ cup beef stock

– 1 tablespoon cornstarch

– 1 tablespoon dark brown sugar (substitute regular brown sugar if preferred)

– 2 tablespoons oyster sauce

– 1 tablespoon soy sauce

– 2 teaspoons sesame oil, divided

– 2 cloves garlic, finely chopped or grated