Step 1

In a small pot on medium high heat combine the sugar and water, bring to a boil, then lower heat and simmer for 5 minutes.  Let cool completely.

Step 2

When the syrup has cooled had the strained lime juice and zest, whisk to combine.  Pour into a freezer safe bowl.  Place in the freezer for approximately 1 hour (may be more or less time depending on your freezer).

Step 3

Remove bowl from the freezer and with a fork break up the ice and mix to combine.  Repeat 3-4 times or until the mixture is slushy.   Serve in a tall glass with a spoon.

Step 4

Follow the same steps for the freezer method, but instead of pouring into a bowl pour into the ice cream maker and churn according to manufacturer's directions, 25-30 minutes or until mixture becomes compact and creamy.  Enjoy!