One case in point: According to a study by the Indian Institute of Management, potato farmers in the potato-growing states of Uttar Pradesh and West Bengal have realized 25% price gains since trading in potato futures began in 2006.

FORBES: Exchange For Good

Locking up his shop, the Indian was argued with, and abused, when demands for alcohol and potato crisps were refused.

NEWYORKER: Bravado

From New York-style sliders to artisan pasta, Malaysian gyoza (dumplings) and Indian bhel pur (a traditional roadside savoury snack made from puffed rice, potato, onion and spices) the standards are high and the ingredients are fresh.

BBC: Gourmet street food in London