The Pradhan Mantri Garib Kalyan Anna Yojana (PMGKAY) is a food security welfare scheme initiated by the Government of India to ensure sufficient food grains to the economically disadvantaged sections of society. Under this scheme, beneficiaries are provided additional food grains free of cost on a monthly basis, in addition to their normal quota under the National Food Security Act (NFSA). The scheme is part of the government’s larger effort to mitigate the impact of the COVID-19 pandemic on the poor. How much additional food grain is provided free of cost to each beneficiary under this scheme?