When making the different ice creams, add only ONE tablespoon vodka to each batch of ice cream instead of 1 ½ tablespoons. This is to give you a firmer ice cream and make it easier to turn the ice cream out of the tin. Line the bottom of a spring form cake tin with baking paper.
Make vanilla ice cream first according to recipe and layer the bottom of the cake tin, spreading the ice cream evenly with the back of a spoon or similar. Cover with plastic wrap and place in the freezer. Make the strawberry ice cream and repeat, layering on top of the vanilla. Make chocolate ice cream last and layer on top of the strawberry. Cover well with plastic wrap and freeze overnight.
Remove from freezer and let sit out for a few minutes. You don’t want it to get melty but you want it to soften VERY slightly so you can pull away the tin without taking the ice cream with it.
Turn upside down onto a platter or similar and open the spring form very carefully and slowly. Carefully pull away the side part of the cake tin. Once you’ve got the side part off, it should be very easy to pull off the bottom of the tin off the top of the cake. Cut into slices and serve.