Tip: To make your own simple syrup: Bring 1 cup sugar and 1 cup water to a boil in a medium saucepan, stirring frequently to dissolve the sugar. Let cool for 30 minutes and then refrigerate until cold, at least 1 hour. Makes about 1 1/2 cups.
To make ahead: Refrigerate the margarita mix (Step 1) for up to 2 days.
1 1/2 alcohol equivalents, 1 vegetable