Plum sauce Dark soy sauce Light soy sauce Pepper Tomato sauce Salt Sugar 排骨 Marinate the pork rib overnight with plum sauce, dark soy sauce, light soy sauce, pepper, tomato sauce, salt & sugar. The next day, take out the marinated pork rib from the fridge. Heat the frying wok with oil. Add in garlic and shallots. Add in the marinated pork ribs. Simmer for 30 minutes in low heat. In between, add in tomato sauce and plum sauce again.