Kolkata girl Prochy Mehta’s latest book Who Is a Parsi? Mehta and her daughter, Sanaya Mehta Vyas, are currently fighting in Calcutta High Court for the inclusion of Mehta’s three maternal grandchildren born out of an interfaith marriage in the community. Forwarded by none less eminent than the irrepressible Fali S. Nariman, Mehta’s painstakingly curated scholarly volume is a passionate, …