Blood orange and pink grapefruit sorbet with limoncello

After a big Christmas meal, there's nothing better than a few mouthfuls of this sharp and sweet blood orange and pink grapefruit sorbet. Fill a glass with a few scoops and pour over the lemon vodka, or limoncello

Ingredients (Serves 4-6)

juice of 5 blood oranges (should give about 500ml juice)
juice of 2 pink grapefruits (should give about 300ml juice)
150g sugar
limoncello, to serve

Scrub and dry the fruit and, using a zester, remove the zest of the oranges. Dissolve the sugar in 200ml water in a small saucepan over a low heat. Add half the orange zest and bring to the boil for 2-3 minutes. Allow to cool and strain.

Squeeze the juice from all the oranges and grapefruits and combine it with the cold syrup and reserved, uncooked zest.

Pour into an ice-cream maker. Freeze/churn for 20-25 minutes and pack into a plastic container. Freeze for at least an hour before serving. If you haven't got a machine, pour into a plastic food container and freeze for 2 hours. Take out of the freezer and stir with a fork. Return to the freezer and repeat this process twice, stirring at two-hourly intervals.

Allow the sorbet 20-25 minutes in the fridge to soften slightly before serving. Put 2 scoops per person into a glass and pour a little limoncello over each one.