salt (coarse if available)
1 ounce white tequila (Herradura is excellent)
1 ounce Controy (Mexican orange liqueur)
juice of 1 Mexican lime

Moisten the rim of a cocktail glass with lime juice and invert in a saucer of salt. Shake tequila, liqueur, lime juice, and ice together and strain into the glass. Makes 1 margarita.