He Whipped Up Treats

The sales pitch could have ended even before it began. Robert Rich was a young dairy man in 1945 in Buffalo, N.Y., trying to launch a nondairy alternative to whipped cream. The tinkerer had packed his soy-based concoction with dry ice to keep it cool on his long hot summer train ride across the state to make his case on Long Island. When he finally got there, the cream that he planned to whip had frozen into a solid block. Undeterred, he broke off