10 Nonnegotiable Rules for a Proper Hoagie
Hoagies, subs, grinders, heroes—each of these terms implies an informal subset of rules that must be followed. A grinder, for example, refers to a sandwich served hot. “Submarine sandwich” promises a soft roll, mayo, lettuce, and really any deli meat at all. And when someone says “hoagie,” well, you should be thinking about the great city of Philadelphia.
Source: yahoo.com