You want it so frosty that wet hands would stick to it, like when Schwartz got his tongue stuck to the flagpole in "A Christmas Story ... reasons why homemade ice cream might not freeze.
The ice cream also contains caramelised walnuts, sugar, and a homemade base. There are around 100 grams of blue cheese every kilogram of ice cream. La Gelatiera only makes the blue cheese ice ...