Watermelon and Lime Granita
1 cup water
2 to 3 limes
3/4 cup white sugar
1/4 (1kg) seedless watermelon peeled and cut into pieces, deseeded
Heat water, 1/3 cup juice and sugar in a saucepan over low heat, stirring, until sugar dissolves. Add melon. Bring to the boil. Reduce heat. Simmer for 3 minutes.
Process one third of mixture in a food processor until smooth. Pour into a 3cm deep 30 cm x 20 cm lamington pan. Process remaining mixture in 2 batches. Transfer to pan. Cool completely. Cover. Freeze for 8 hours or until set.
Remove from freezer. Stand for 10 to 20 minutes, or until soft enough to run fork through. Spoon into glasses. Serve.