Choose your combo, place the ingredients in a food processor or blender and blitz until smooth – have a taste and tweak with a little sugar, if needed.Tip into a shallow 20cm freezerproof dish (I like to use enamel or stoneware that will look nice on the table) and freeze for 5 hours, then cover and leave in the freezer until required.To serve, use two forks to scratch the granita into ice crystals to order at the table – you’ll need to work quickly but it’s worth it! Delicious served with whipped cream, yoghurt, crème fraîche or tinned custard. It’ll keep happily in the freezer for up to 3 months.Nutrition values are based on the mandarin combo.