The mix is poured into an ice cream turbine which will transform the mix from liquid to ice cream. This transformation is possible thanks to two phenomena: the increase in volume and the freezing of the mix.
The increase in volume comes from the rotary motion that introduces air into the mix to achieve a mousse-like result. The freezing is a function of the double-skinned vat which cools the mix, crystallises the water to turn it into ice..