If you purchase a larger piece of flank steak, it can be cut in half lengthwise against the grain to make 2 long pieces, which is good for quicker cooking and less waste. BYOC ("Be-your-own-chef"): If you have it on hand, try adding horseradish instead of (or in addition to) the garlic on the steak. Pickled peppers can be any kind of pepper or pickled vegetable you like and keep on hand as a staple: jalapenos, banana peppers, pepperoncini, cherry peppers, onions, long beans, okra, Calabrian chile, etc. BYOC ("Be-your-own-chef"): When toasting the hoagie rolls, try adding mayo instead of butter for an added layer of flavor. Any leftover steak is fine to use, but also try chicken or even shrimp--almost any leftover meat is going to be great with cheese, onions and bread!