Before going a step further, pick through the cubed watermelon and remove any visible seeds. Yes, even seedless watermelon has seeds; it has to reproduce somehow.

Now, place 2 cups of the watermelon and 1/4 cup water into your blender and whir away. Pour the pureed watermelon into a large bowl (at least 4-cup capacity) and repeat with the remaining 2 cups of watermelon and another 1/4 cup water.

Add the sugar, lime zest, and lime juice to the watermelon mixture. Stir to dissolve the sugar completely, then cover the bowl and refrigerate it until the watermelon mixture is chilled, at least 2 hours and up to 24 hours.

Once the mixture is good and chilly, process it in an ice cream maker according to the manufacturer’s instructions. Transfer the now-frozen concoction to an airtight container, and freeze for an hour to allow the mixture to fully set.

Perfect after any meal especially after eating picnic fare, or barbecue.