<P> The origin of the dish is disputed . </P> <P> Rahul Verma, a food critic who writes for The Hindu, said he first tasted the dish in 1971 and that its origins were in the Punjab . He said "It's basically a Punjabi dish not more than 40 - 50 years old and must be an accidental discovery which has had periodical improvisations". </P> <P> Another explanation is that it originated in an Indian restaurant in Glasgow, Scotland, but probably from the British Bangladeshi community which ran most Indian restaurants in the United Kingdom . </P> <P> A specific version of the British explanation recounts how a Pakistani chef, Ali Ahmed Aslam, proprietor of the Shish Mahal restaurant in the west end of Glasgow, invented chicken tikka masala by improvising a sauce made from yogurt, cream, and spices . In 2013, his son Asif Ali told the story of its invention in 1971 to the BBC's Hairy Bikers TV cookery programme: </P>

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