Gin and Tonic Ice Cream Cake Recipe - Gin and Tonic infused sponge layered with a citrus semifreddo frosting, this cake is utterly addictive. The whole cake is so light and airy, one slice will not be enough! If you don’t want to freeze it, it works just as well refrigerated. Especially if space is a bit tight in the freezer! Alcohol can easily be omitted. Without the Gin you will still have a refreshingly citrusy cake.