Please Explain: What's in a Twinkie?

In Twinkie, Deconstructed, Steve Ettlinger uses the Twinkies ingredient list as a road map for exploring processed food in America. On today's Please Explain, we ask him what common ingredients like Polysorbate 60, Calcium Sulfate, and Phosphates actually are--from how they're made to why they're used in food. Call 212-433-9692.

Twinkie, Deconstructed is available for purchase at amazon.com