Pour the lime juice, tequila and orange liqueur or triple sec into a bowl and stir in the icing sugar until it dissolves.
Add the cream and whisk until the mixture is thick and smooth, but not stiff.
Spoon into an airtight container and place into the freezer to freeze overnight. This ice cream doesn't need to be taken out to soften before serving, as it won't freeze too hard and melts quickly.
Recipe taken from Nigella's book, "Nigella Express"
For more recipes, please visit the BBC website: www.bbc.co.uk/food
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