Frozen Clover Margaritas for 8
In a freezer-proof 13"x9" pan, mix pineapple juice and crushed pineapple (with juice).
Mix 2 parts green decorating sugar to 1 part kosher salt.
Dip rims of 8 margarita glasses into water, shaking off excess; dip into sugar mixture.
In blender, puree tequila, triple sec and 1/2 cup basil leaves until basil is finely chopped; strain into bowl.
Stir in frozen margarita mix.
Transfer half of mixture to blender.
Break pineapple ice mixture into 1" pieces; add half to blender.
Process until smooth.
Transfer to pitcher.
Repeat with remaining tequila and pineapple mixtures.
Divide among 8 prepared margarita glasses.
Garnish each glass with a slice of lime.
Arrange 4 pieces of fresh basil on top of drink so each guest gets a 4-leafed clover.