1 kilo watermelon
½ kg sugar
1 sachet mastic powder
Cut the watermelon into large cubes and place in a large pot with all the sugar. Let sit for at least 12 hours or overnight. Next, strain the fruit and puree in a blender. Boil the strained syrup for about 45 minutes and add the fruit. Stir until it becomes thick.
Let cool completely and store in sterilised jars.