Nothing beats a stroll around the supermarket to inspire an undercover economist. My latest visit revealed a cornucopia of breakfast cereal. You should go and take a look sometime. There’s Weetabix itself, of course, and nobody these days would be surprised to discover Weetabix Organic. You may also be aware of Weetabix Minis, all of which take the “crisp” format: Honey & Nut Crisp, Chocolate Crisp, Fruit & Nut Crisp.