Professor Charles Spence is an experimental psychologist at the University of Oxford. His research focuses on how an in-depth understanding of the human mind will lead to the better design of multi-sensory foods and products. He is the author of several books including his most recent, Sensehacking: How to Use the Power of Your Senses for Happier, Healthier Living. On this episode he talks about how he started experimenting with food and the human senses, working with Heston Blumenthal, and how he doesn't understand ice-cream.