New Delhi, December 14: The onion has been a part and parcel of Indian cuisine. But from the last few days, intractable prices of onion has been in the centre of debate on inflation and economic slowdown. Even as the Reserve Bank of India (RBI) was having its monetary policy meet, economists from Harvard and Oxford were forecasting the apex bank’s steps in controlling inflation. The Bank of America gave a straight and simple advice - to have a look at India’s onion prices.