Vodka sauce became very popular in the 1970's and 80's in the form of penne alla vodka. Though it's often made with pasta and known as its own dish, the sauce by itself can be used in so many other ways. Essentially, it's a rich tomato sauce, much like marinara, but with the addition of a little butter, cream, and, of course, vodka. Use the sauce in all the ways you would with a tomato sauce, with meats, grilled fish, or pasta.