After lime juice is extracted, rub the lime rind around the edge of a chilled martini or wine glass

Invert rim of glass onto a generously salted surface and lightly twist the edge of the glass into salt to form a salty crust on the rim

If time permits, freeze the glasses for a frosty appearance

Shake all ingredients together with ice or blend together in a blender

Taste and add more lime or Triple Sec if desired

Pour into the salt-rimmed glass. Variation: For an extra frothy Margarita, add about one-quarter of an egg white to the mixture before blend- ing, and whip until frothy.