“I know what you’re thinking,” says MythBusters co-host Grant Imahara, standing in front of a conveyer belt chugging out French fires. “These look like potatoes, but are they really potatoes?” It’s the question nearly everyone finds themselves asking about McDonald’s world famous French fires. Well as part of McDonald’s 2015 ‘honesty is the best policy’ marketing campaign, their customers got a first-hand look at the process in which they are produced. Video