The man, believed to be in his late 30s, was caught on CCTV throwing the meat at the place of worship in St Thomas’s Road, Finsbury Park.
Police were called to the mosque at 4.15am on May 26 after he was seen approaching the building several times in the early hours.
He waited around until there was nobody there then launched the religiously aggravated hate crime.
He’s been described as white, 5ft 9ins tall and of medium build.
Detective Inspector Ralph Coates of Islington Community Safety Unit said: ‘We take hate crime extremely seriously as we know how destructive these offences can be, both to individuals and to communities.
‘I would urge anyone who recognises this man or has any information that will help the investigation to contact police.’
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