Watermelon Slushie

Step 1: Blend the watermelon in a blender until smooth and then strain through a sieve into a jug, pressing with the back of a spoon to extract as much liquid as possible and then discard the solids and reserve 500ml (2 cups) watermelon juice in a jug and place in the fridge to chill.

Step 2: Pour the remaining watermelon juice into a large plastic container or ice-cube trays and place in the freezer for 4 hours or until frozen.

Step 3: Clean the blender and blend the raspberries, sugar and vanilla bean paste in the blender until smooth and then strain the mixture through a sieve into a bowl, pressing with the back of a spoon to extract as much liquid as possible.

Step 4: Discard the solids and clean the blender.

Step 5: Remove the frozen watermelon juice from the freezer and set aside for 10 minutes to soften slightly.

Step 6: Turn onto a board and coarsely chop and then place in the blender with the chilled watermelon juice and blend until smooth.

Step 7: Use a star-shaped cutter to cut stars from the extra watermelon slices.

Step 8: Divide the raspberry puree among 4 large serving glasses and top with the watermelon mixture and soda water and decorate with watermelon stars and fairy floss and edible flowers, if you like.