No, they don’t, but the margarita I ordered a few days ago was surprisingly good.
The cocktail featured Sauza gold and Rande Gerber’s “Midnight Bar Collection” margarita mix, bottled by Stirrings. Gerber, a former model, is married to Cindy Crawford and runs the Midnight Oil/Gerber Group chain of bars and lounges (over 30 properties, including The Whiskey and Stone Rose Lounge in NYC). He developed a line of cocktails for Delta in 2007. This mixer had real lemon, lime and orange juice and was not overly sweet.
Ted Haigh writes the original margarita recipe as this:
1 1/2 oz. blanco tequila
1 1/2 oz. Cointreau
1 1/2 oz. fresh lime juice
Shake in an iced cocktail shaker, strain into a large cocktail glass and rim with crusted salt.
Haigh traces this cocktail back to 1937, noting the “Brandy Crusta begat the Sidecar Cocktail, which in turn begat the Margarita.” Some recipes will call for lemon instead of lime juice and others will call for triple sec instead of Cointreau. I wouldn’t recommend either of these substitutions. Even more importantly, do not use “sour mix”; fresh citrus juice is always the way to go.
I also checked my Grossman’s Guide and was tickled to find something I did in college in print:
“The traditional method of drinking Tequila in Mexico is a ceremony in itself. The imbiber takes a wedge of lime or lemon, puts a pinch of salt on his thumbnail or on the back of his hand, and pours a chilled jigger of Tequila. He then bites the lime, licks the salt, and gulps down the Tequila.”