For this recipe use 2/3 cup teriyaki marinade per pound of meat. Each marinade is unique so there is not steadfast rule how much you should use. You want enough marinade so that the chicken, meat, fish etc is coated. Some highly acidic marinades or those that are very salty can be used in smaller amounts (1/2 cup per pound of meat) whereas many store-bought multi-purpose marinades are not as strong and can be used in larger quantities (1 cup per pound of meat.)