Lime Sherbert Twist

Directions

1. 1
   Warm the milk and sugar in a saucepan over medium heat until the sugar dissolves.
2. 2
   Let the mixture cool completely, and add the lime juice, zest, and 1 1/2 oz.
3. 3
   of tequila.
4. 4
   Freeze the mixture.
5. 5
   Once it's solid, pour remaining tequila over the frozen mix, and stir.
6. 6
   Pour into a glass, and top with seltzer.