1Prep veggies: Chop the onion into large chunks, and chop the bell peppers into bite-sized pieces. Mince the garlic and grate the ginger.
2Marinate the steak: In a bowl, combine the ribeye steak with oyster sauce, dark soy sauce, soy sauce, black pepper, and baking soda. Mix well and set aside.
3Make the sauce: In a bowl, mix water, dark soy sauce, oyster sauce, soy sauce, sugar, and Shaoxing wine. Mix well and set aside.
4Cook the steak: Add oil to a wok, add garlic and ginger, then add marinated beef. Spread it out and let it sear on each side until 80% cooked.
5Add the vegetables: Once the steak is 80% cooked, add in the chopped vegetables.
6Add the sauce: Pour the sauce into the wok, and bring it to a boil for 2-3 minutes.
7Add the cornstarch slurry: Add a cornstarch slurry to thicken the sauce.
8Finish and serve: Finish with sesame oil, give it a toss, and serve over rice.