Subs, also called grinders, hoagies, heroes, wedges, and a variety of other regional names, are sort of the second official American sandwich, behind the hamburger. They're versatile, as a sub can be a cold sandwich laden with cold cuts, vegetables, mayo, and various spreads, or a hot sandwich, such as a meatball hoagie, chicken parmigiana grinder, or my favorite, a steak and cheese sub. Many would argue that the Philadelphia cheesesteak is the standard setter. "There are a lot of sandwich shops out the ...