It's one of the most popular cocktails around but most people just drink whatever the house tequila is. I've gotten to be way too much of a tequila snob for this and I always, always, always call my tequila. If they don't have any decent (by my standards) tequila behind the bar then I just order something else. I won't get into the tequila rant. Maybe some other time. Lets just get to the drink:
2.5 oz 100% Blue Agave (Reposado or Blanco/Silver) Tequila
2 oz fresh squeezed lime juice
1 oz Grand Marnier or Cointreau
.75 oz Agave Nectar
1/3 cup of Ice
Large martini style glass, margarita glass or rocks glass
(My opinion: Never serve a man a margarita in a martini glass)
Add all liquid contents plus ice to a shaker. Shake on its side until the shaker is frosty (30 seconds or so).
Rim the glass with lime wedge and dip in the kosher salt. Pour contents of the shaker (ice and all) into the glass.
Martini style glass:
Chill the glass first with ice water. Pour out the water. Rim the glass with a lime wedge and dip in kosher salt. Strain the contents of the shaker into glass. Garnish with a lime wedge.
Repeat as necessary.