Display and sale
The display case is the machine everyone has, whether they produce or not. And it's where the sale is won: if the ice cream looks hard, frosted or slumped, how good it is stops mattering. The first choice isn't a brand, it's a format — open pan, closed carapina or direct serve — because it dictates the whole unit. Fan-assisted or static also changes how much the surface dries out over the day.
