According to the Times of India, The Food Safety and Standards Authority
of India (FSSAI) has banned the use of any material of animal origin in
silver leaf (silver foil) (chandi ka warq), commonly used in
confectionaries and sweets. “The silver leaf is prepared by placing
small thin strips of silver between the intestines of cows and buffaloes
and continuously hammering these bundles for up to eight hours a day till
desired thickness of silver leaf is achieved,” an official said.