India, June 1 -- "It was a hard slap in the face," says entrepreneur Manjula Gandhi Rooban. Her start-up, MangoPoint, works to improve mango supply chains. The "slap" came at a major produce trade fair in Berlin. "A representative of one of Europe's top food merchants said, 'India has some of the best-tasting mangoes in the world. There is no doubt about that. But what you're giving your population is just poison'." Rooban says. He was alluding to the vast amounts of pesticide applied to mango trees, often with dubious benefit. We need the slap, because few Indians - past and present - are untouched by the mango. Think of the chaos unleashed in Lord Shiva's household, when the sage Narada presented him with a sacred mango on condition that ...