Ice cold margaritas long have been the cocktail of choice to sip with Mexican food. The tequila this drink is made with is a distilled spirit from the Agave tequilana plant, named for the town of Tequila near Guadalajara. Allow time for the lime to impart its flavor before mixing the margaritas.
Finely shred the peel from the 2 limes (you should have about 1 tablespoon). Stir lime peel into water. Let stand for 30 to 60 minutes. Strain lime peel mixture through a sieve; discard peel. Meanwhile, squeeze limes to make 1/4 cup juice; set aside.
Stir sugar into strained lime peel mixture until dissolved. Stir in reserved 1/4 cup lime juice, tequila, and orange liqueur. Pour into a blender container; add ice cubes. Cover; blend until ice is chopped. If desired, rub glass rims with lime wedges and dip in coarse salt. Pour tequila mixture over crushed ice. Makes 3 (about 6-ounce) servings.