Teppanyaki sauce, also known as Yakiniku sauce, is a sweet and savory Japanese barbecue sauce used to grill beef, pork, chicken, and seafood. It's also used for dipping grilled meats, vegetables, and noodles. Why You Will Love This Recipe This sweet and savory yakiniku sauce recipe is also used as a Japanese marinade, Teppanyaki grilling sauce, and used as a dipping sauce at the serving table.