Gastronationalism

Gastronationalism or culinary nationalism is the use of food and its history, production, control, preparation and consumption as a way of promoting nationalism and national identity.

It may involve arguments between two or more regions or countries about whether a particular dish or preparation is claimed by one of those regions or countries and has been appropriated or co-opted by the others.

Source: https://en.wikipedia.org/wiki/Gastronationalism