"So long" an essential ingredient in your estimation does not change the facts of its origin, or its appropriation, or who and how it benefited. Much the same as tea and sugar. All edibles that migrated in one direction back to the imperial expropriator, but seeing as how you also couldn't distinguish elsewhere the obvious and factual reasons of why humans of the colonial era migrated out of the UK then it's certainly no surprise that you would likewise turn another blind eye to colonial realities when it comes to foods.