ImStillMags provided:

> http://www.nytimes.com/2010/03/03/dining/03milk.html

From the article: "Ms. Lin said that she finally hit on the idea of whipping
condensed milk, which she always keeps on hand, into heavy cream."

She "hit on the idea"? It's in _Ben & Jerry's Homemade Ice Cream & Dessert
Book_, copyright January 1987. Probably before Ms. Lin was even born.

Bob