Forgo the long list of ingredients and pick a winner that features only four. Start with frozen margarita mix, and add tequila, blue curaçao liqueur, and lime juice. It's the perfect drink to serve poolside.
1 (10-ounce) can frozen margarita mix
3/4 cup tequila
1/4 cup blue curaçao liqueur
2 tablespoons lime juice
Combine all ingredients in a blender. Fill with ice to 5-cup level, and process until smooth. Serve immediately.