Mike speaks with leading food economist David Ortega about the causes of food price increases. They also talk about what isn't causing food price increases. This is the first of two conversations with Dr Ortega.

Food Focus is a platform with the intention of providing opportunities to discuss, challenge and learn about topical issues of interest in the food system. Recorded in offices, over Skype or maybe even over a drink – these conversations happen wherever Mike can put down his digital recorder and chat with experts across the food system.