Islamic State terrorists are teaching their fighters to eat non-Muslims, it has emerged.

A handbook found in the terror group's training school has been found by a British counter-extremism think tank, revealing the horrifying new stance of the jihadis.

ISIS chiefs even give advice on what parts of the body to eat and how to prepare them and comes after a sickening report a mother was fed the remains of her own son when she was told by the terrorists it was meat and rice.

A giant ISIS executioner prepares to behead a young man in the street in one of many of the terror group's sick traditions as it emerges jihadi chiefs are urging their fighters to eat people

A member of ISIS waves the terror group's flag and a gun in the air as he walks down the street

The memo was discovered by the Quilliam Foundation and its chief executive Haras Rafiq revealed cannibalism was on the curriculum

He said if there are no food supplies available during what they describe as a time of jihad, terrorists were encouraged to kill non-Muslims or Muslims who do not share their version of Islam for food.

Practicing Muslim Mr Rafiq said he found the discovery utterly revolting, and that their most horrific finding was that cannibalism was being taught in classrooms.

The plight of the desperate mother was reported when she visited ISIS' headquarters in Mosul, Iraq.