There was a time, not so long ago, when quinoa was a genuine curiosity on British shelves, an unfamiliar grain with an unfamiliar name that most people struggled even to pronounce. Today it sits comfortably in kitchen cupboards across the country, its small, fluffy grains a familiar sight in salads, bowls and side dishes. Yet for all its recent popularity, quinoa carries a history that stretches back thousands of years, long before it became a fixture of the modern health con