Yes, that is half of a lime, muddled and resting at the bottom of your frosty, salted glass. And trust us, a good amount of lime makes all the difference in this Mexican cocktail. A margarita at this retro (and very metro), dimly lit uptown bar will run you $6 — order one during happy hour (Monday through Friday from 4 to 7 p.m.) and it's $4. The semi-charming (also very metro) bartender pours a heavy-yet-smooth combination of Jose Cuervo Gold, triple sec, and fresh lime juice that he swears will prevent a hangover. Fair warning: The fresh juice won't get you down the flight of narrow stairs and out the exit after you've had a couple.