Marinade/ˌmærɪˈneɪd/ Definition 1 of 2Pro Tip 1/3Culinary Context Marinade is commonly used in cooking to add flavor or tenderize food. Chef's secret is the special herb marinade for the steak. Pro Tip 2/3Time Factor The longer food is left in a marinade, the more intense the flavors can become. For deep flavor, let it sit in the marinade for several hours. Pro Tip 3/3Flavor Variety Marinades can include a mix of spices, acids, oils, and herbs. The marinade for the tofu was a zesty lime and cilantro blend.