Driving around the country, you'll find two big frozen drinks at convenience stores and gas stations: Icee and Slurpee. But as recently as the 1990s, there used to be a third. The kind of drinks that ...

Flavored ice drinks had been around since the Romans, and machines had been churning them out under various brand names for almost as long, it seems, when Will Radcliff, a peanut salesman, had the ice ...