In a mixing bowl, mix together, salt, sugar, garlic powder, onion powder, pepper, soy sauce, oyster sauce, sesame oil and cornstarch.
1 tsp salt, 1 tsp sugar, 1 tsp garlic powder, 1 tsp onion powder, 1/2 tsp ground white pepper, 1 tsp soy sauce, 1 tsp oyster sauce, 1 tsp sesame oil, 1 tbsp cornstarch