If you have some "HOISIN SAUCE" or some "OYSTER SAUCE", mix with soy sauce and you're done Or grate ginger and mix with honey, sherry, and soy sauce.

TERIYAKI
Source: The New Food Lover's Companion: Comprehensive Definitions of Nearly 6000 Food, Drink, and Culinary Terms (Barron's Cooking Guide)
by Sharon Tyler Herbst

Definition: [tehr-uh-YAH-kee; tehr-ee-YAK-kee] n. 1. A Japanese dish consisting of food, such as beef or chicken, that has been marinated in a mixture of soy sauce, sake (or sherry), sugar, ginger and seasonings before being grilled, broiled or fried. The sugar in the marinade gives the cooked food a slight glaze. 2. A homemade or commercially prepared sauce made with the above ingredients. teriyaki adj. A phrase describing food cooked in this manner, as in "chicken teriyaki."