![Malcolm Gladwell](https://i0.wp.com/media.newyorker.com/photos/59097b70019dfc3494ea36cf/master/w_300,c_limit/gladwell-malcolm.png?w=660&ssl=1)
McDonald’s used to make the best fast food french fries in the world — until they changed their recipe in 1990. Revisionist History travels to the top food R&D lab in the country to discover what was lost, and why for the past generation we’ve been eating french fries that taste like cardboard.