Like mirepoix, sofrito is a flavor base. However, instead of the carrot and celery in mirepoix, sofrito is a tomato-based sauce, made with onion, garlic, tomato (or tomato paste) and peppers. A Spanish flavor base, sofrito means “to lightly fry,” and is used in many classic Spanish dishes, like paella, empanadas and stews. Sofrito and its regional variations are popular in many areas of the world, particularly Latin America and the Caribbean, where it's used to flavor soups, beans, rice, and occasionally meat.