These flavorful drinks evoke a Mexican beach vacation and are a wedding-worthy alternative to a standard margarita.
Stir together tequila, lime juices, liqueur, and passion-fruit puree. Refrigerate until ready to serve, up to 1 day.
Dip rims of glasses in lime juice, and then in salt. Fill each glass with ice, 3/4 cup margarita mixture, and 1/4 cup club soda, if desired. Serve immediately.