Lime Cheesecake Ice Cream with Raspberry Swirl

It's a little experiment that turned out oh so right.
This thick, creamy cheese cake ice cream, infused with lime and rippling with raspberry puree, has a lovely biscuit base mimicking the real deal and tastes sublime. It's rich and decadent and smooth, and the flavours of the lime and raspberry together are just meant to be. There's nothing quite like home made!

LIME CHEESECAKE ICE CREAM WITH RASPBERRY SWIRL (Adapted from The Perfect Scoop By David Lebovitz)

1 lime
125ml (1/2 cup) full cream milk
225g cream cheese, room temperature
250g sour cream
pinch salt
1 tsp vanilla essence
1/4 cup sugar
1 cup raspberries
green coloured food dye (optional)
3 scotch finger biscuits, crushed

Finely grate the zest of one lime into a small bowl containing the milk. Stand for half an hour to infuse. Meanwhile, cut the lime in half and juice. With a small spoon, scoop out the green fleshy part of the lime and also add this to the juice.
In a food blender or processor, place the cream cheese, sour cream, salt, vanilla and sugar, as well as the juice and flesh of the lime. Add the milk and zest. Process until well combined, then place in the refrigerator to chill for at least an hour.
Add the food colouring.
Pour the mixture into the ice cream maker and follow the manufacturer's instructions until the mixture forms a thick ice cream. While churning, place the crushed biscuits in the base of the container you are using to store the ice cream. Puree the raspberries and set aside. Spread the churned and frozen ice cream over the biscuit layer when removed from the ice cream machine. Swirl the raspberry puree through the ice cream and place in the freezer until firm. Serve with raspberries or more lime zest if desired.

Makes about 700ml