2 kg (10 cups) chopped watermelon (1 large watermelon)
250 g (9 oz) strawberries, hulled
2 teaspoons caster (superfine) sugar
Combine the watermelon, strawberries and sugar in a bowl. Blend the mixture in batches in a blender until smooth, then pour into a shallow metal tray. Cover with plastic wrap and freeze for 2-3 hours, or until the mixture begins to freeze. Return to the blender and blend quickly to break up the ice. Make 6 medium glasses.