|2||limes (zest, juice)|
Wash mint, dry, and pluck leaves from stem. Remove watermelon rind and seeds. Chop watermelon and set aside. Wash the limes and zest finely. Halve zested limes and juice.
Pour lime juice, lime zest, sugar, and water into a pot over medium heat. Stir until the sugar has dissolved completely, remove from the heat, and let the mixture cool slightly. Purée chopped watermelon and mint leaves in a food processor until smooth. Pour in lime simple syrup and pulse to combine.
Poor cooled mixture into a baking tin and freeze for approx. 2 hrs. Remove sorbet from freezer and, using a fork, roughly break apart the mixture before returning it to the freezer for approx. 2 hrs. At the end of this time the sorbet should be frozen but not rock hard. Return it to the food processor.