Van Nuys (aka Dirty Margarita)

1 1/2 oz tequila
3/4 oz triple sec
3/4 oz sweet and sour mix
3/4 oz Kahlua coffee liqueur

Invented by H.B. Stone, inspired by the city of Van Nuys, CA... It's a tasty drink; citrus at first, then the sweetness of the Kahlua builds after you swallow.Shake and strain into a thoroughly chilled margarita glass. Optionally, build over ice in an old fashioned glass.