But the truth is, the fast-food giant has already been cooking with trans-fat free oil in about 1, 200 test restaurants nationwide.

FORBES: McDonald's Arches Still Golden

To appease the angry health gods, PepsiCo is this month launching new versions of Doritos, Cheetos and Tostitos without trans fatty acids in the U.S. The urgency is such that the company hasn't bothered to test-market the products.

FORBES: Pepsi's New Challenge