Pour the double cream into a large bowl and add the vanilla extract. Whip to soft peaks using an electric whisk, about 2-3 mins. Set aside. Pour the evaporated milk into a different bowl and whisk until slightly thickened. Pour the condensed milk over the evaporated milk and fold it in. Gently fold in the double cream mixture, then pour into a 3-litre lidded container or loaf tin. Put in the freezer for at least 6 hrs or overnight. Will keep frozen for up to two months.

When the ice cream is set, make the lime-macerated strawberries. Put the strawberries in a large bowl with the lime zest, juice and icing sugar, and mix together well. Leave for a few minutes before serving with the ice cream.