Dichloran Glycerol Medium Base, Granulated is recommended for selective isolation of xerophilic moulds from food samples. This medium was formulated by Hocking and Pitt and is recommended for isolation and enumeration of xerophilic moulds from dried and semidried foods. The glycerol at 18% (w/w) lowers the water activity (aw) from 0.999 to 0.95 without causing any problem. This restrictive characteristic makes the medium especially suitable for foods. Inhibition of growth of bacteria and restriction of spreading of more-rapidly growing moulds aids in the isolation of slow-growing fungi by preventing their overgrowth by more-rapidly growing species.