Beat the eggs until fluffy for about 2 minutes.
Add the sugar, ¾ of the caramel (reserving the reminder to swirl over the top) and vanilla and carry on whisking for a further 3 minutes or so until the sugar is incorporated and the colour is pale.
Add the cream and whisk until it thickens – about 3 minutes.
Add the milk and mix to combine
Run the mix through an ice cream maker until ready according to the manufacturer’s instruction.
Once the ice cream has reached its final stage, add half the chocolate pieces and allow them to swirl very briefly through the mix.
Decant it into a freezer-proof container and dot the remaining caramel over the top. Using a skewer, swirl this through the top ¼ of the ice cream, or just on the surface. It doesn’t matter. Sprinkle over the remaining chopped-up peppermint crisp chocolate and freeze until ready to serve.