Swiss retailer Coop has opened a supermarket just outside Zürich for the discerning shopper. Not only is the company promoting provenance and sustainability with its products, but it is also building stores that raise the bar for green architecture. Monocle editor in chief Tyler Brûlé talks to Jürg Peritz, Coop's head of marketing and purchasing, about selling Swissness and why it's time to let in the daylight.