From a distance, it’s difficult to pinpoint the source of the stench amid the rolling green fields in this Sikh-dominated hamlet off Kurukshetra, Haryana. Covered by black tarpaulin sheets and hay, the heaps of rotting potatoes—tonnes of them—are barely visible until farmer Bhupinder Pal Singh points to them. Some of the tuber has melted into thick slush, infested with insects and flies. The spot has become a local tourist attraction of sorts: a mini-mountain of rotting aloo.