Instructions

• Pour the water and sugar in to a saucepan, place over a low heat and stir until the sugar dissolves.

• Tip the liquid in to a bowl and place that bowl inside a bigger bowl that's full of cold water and ice and stir the syrup until cool.

• Add the watermelon chunks to a blender and combine until a puree forms. Tip in the syrup and lime juice and blend.

• Pour the mixture in to a baking tray/pan, cover with clingfilm and place in the freezer.

• Remove from the freezer and using a fork scrape to lighten the texture of the ice. Scoop in to a glass and tip in water, lemonade or alcohol and stir. Garnish with a slice of watermelon.