By Roudri Bandyopadhyay Mangoes are the king of fruits; at least that’s what I was told as a child.  No part of a mango in any form goes to waste. Unripe mangoes are often cooked with lentils and enjoyed across the land of Bengal induring summer, when the blazing heat from the sun feels like it could crack skulls open. The recipe for Tok Daal is quite simple. My mother explained it to me in fiv...