Original sentence: Historians of ethnic food Peter and Colleen Grove discuss various origin-claims of chicken tikka masala, concluding that the dish "was most certainly invented in Britain, probably by a Bangladeshi chef".Some trace the origins of the dish to the South Asian community in Britain and others claim that the dish was created on the Indian subcontinent.The Multicultural Handbook of Food, Nutrition and Dietetics credits its creation to Bangladeshi migrant chefs in the 1960s, after migrating from what was then East Pakistan (now Bangladesh)
Edited sentence: Historians of ethnic food Peter and Colleen Grove discuss various origin-claims of chicken tikka masala, concluding that the dish "was most certainly invented in Britain, probably by an Indian chef".Some trace the origins of the dish to the Indian community in Britain and others claim that the dish was created on the Indian Subcontinent.The Multicultural Handbook of Food, Nutrition and Dietetics credits its creation to Indian migrant chefs in the 1950s, after independence in India