The price of onions is, oddly, expected to play a key role in elections to the state assembly in New Delhi in December.

Onion prices have risen recently and there are reports of a shortage. The city’s ruling Congress party has alleged that traders, perhaps sympathetic to the opposition BJP, are creating an artificial shortage by holding on to stocks.

The onion is a key political tool because it is a fundamental part of the diet of Delhi’s 13 million residents, who consume 150 tonnes a day. Its price played a key role in local elections in 1998, when a ten-fold increase in the price saw the BJP thrown out of power.