Deep-frying steak is an underrated yet delicious way to cook high-quality beef, and a classy cut like porterhouse makes it even better. A porterhouse is thick, flavorful, tender, and also quite expensive at $20 to $25 per pound, so it's crucial to do right by your steak, and a surefire way to fry it up so it's moist and tender is to freeze it first.