Casu martzu (sardinian pronunciation: [ˈkazu ˈmaɾtsu]; literally 'rotten/putrid cheese'), sometimes spelled casu marzu, and also called casu modde, casu cundídu and casu fràzigu in sardinian, is a traditional sardinian sheep milk cheese that contains live insect larvae (maggots). a variation of this cheese exists also in corsica (france), where it is called casgiu merzu, and is especially produced in some southern corsican villages like sartene.derived from pecorino, casu martzu goes beyond typical fermentation to a stage of decomposition, brought about by the digestive action of the larvae of the cheese fly of the piophilidae family. these larvae are deliberately introduced to the chees...

Source: Wikipedia