"We wouldn't be the No. 1 bestselling [meat substitute] in the U.K. and Europe if we had the kinds of reactions that Michael Jacobson is claiming," said Nick Hughes, managing director of Quorn's maker, Marlow Foods Ltd.

"Quorn is about as far from natural as you can get," Jacobson recently wrote. "There is an abundance of healthful meat alternatives made with things that come from farms, like soybeans, mushrooms, rice .... If you're going to sell a food that comes from a lab, a test tube, or a giant vat, it should at least not make so many people sick."

"They're skillet meals," cheerily explains Margaret Coates, Marlow Foods' development assistant. "We're hoping that you'll enjoy those!"