Step 1

At Least 8 Hours Before Serving: Combine tequila, triple sec, lime juice, and simple syrup in a sealable container that will fit in your freezer. Seal and place in freezer for at least 8 hours and up to 1 week (the mixture will remain completely liquid).

Step 2

When you are ready to serve, add ice and tequila mixture to blender. Blend on highest setting, pulsing and scraping down sides as necessary, until completely smooth. Serve immediately.