BYOB (bring your own booze) may be one of the sweetest acronyms around. Especially in NOLA where restaurants’ legendary nosh is matched with more than legendary prices. That spaghetti carbonara with the 2010 bottle of Montepulciano? Yeah, it doesn’t come cheap. So when those four little letters are printed or uttered in order, us New Orleanians do backflips — and then immediately rush to the nearest spirits store.