Step 1

Combine all ingredients in a blender and blend until slushy and smooth. Serve in a chilled glass with a lime wedge.

Step 2

Combine the sugar and water in a saucepan set over medium heat, stirring until the sugar is dissolved.

Step 3

Turn the heat off, stir in the lime zest, and let sit for 20 to 30 minutes.

Step 4

Strain into a glass jar and let cool. Store in the fridge for up to 2 weeks