Peel the watermelon and cut into pieces. Place the watermelon, juice from cutting the watermelon into a food processor and blend until smooth.
Add lime juice, sugar and Relief or Digest Easy and process until sugar is dissolved. Stir through mint. Allow to stand for 1 hour.
Pass the mix through a sieve pressing down to squeeze out all juice.
Pour the watermelon mix into a large jug of ice, add lime slices, sprigs of mint then top with sparkling water.
Note : Add vodka for a fresh alcoholic drink.
Serving Size 6