For the pounded yam, peel and wash tuber of yam, dice into large chunks add water in a pot and allow to boil. When yam is soft, strain out excess water and keep aside. Put boiled yam (preferrably little by little) in a mortar and pound with pestle until soft and no evidence of lumps. Add little water (from excess water drained from yam) if Yam gets sticky and hard to pound. After getting soft lumpless texture, mould into a ball and put in Santana(transparent leather).