In some parts of Canada, ethnic traditionally has meant anything that isn’t white bread Anglo food or white bread French Canadian food. There’s a derogatory term, mangiacake (sometimes shortened to cake or caker), which is used by Italians, Greeks, and other groups to describe white bread type culture.
I grew up in a house where we served plain Canadian Anglo food like roast beef to guests.
Our neighbours, the Smiths, ate Shepherd’s Pie once or twice a week. Beef Shepherd’s Pie, which is what typical 4th or 5th generation Anglo Canadians consider to be Shepherds Pie, as lamb is considered a little foreign in Canada, even if their own ancestors or their present day 8th cousins in the Welsh, Scottish, Irish or English homeland enjoy lamb. Cottage Pie is found in a few somewhat authentic Pubs, but a typical white bread Canadian does not use Cottage Pie as a term, and would be disappointed if lamb was used without an explicit warning.
Our Greek family recipes and German family recipes were prepared for close friends, or for special family events.
In the 1970s, most of our 4th Generation Canadian neighbours did not use garlic and did not like garlic. That has changed. It’s also been amusing to see the children of one garlic phobic couple marry spouses who were Polish in one case and Chinese in the other. The Grandma has now broadened her palate to include garlic and regional Polish and Chinese foods. She still eats plain at home. She still likes her chocolate plain, not too fancy, no nuts.
I have a feeling what is considered ethnic, exotic or foreign is very different in a city like NYC, where there is so much diversity, than say, London, Ontario or the suburbs of Colorado Springs.
When I visit the burbs of Pittsburgh, my Irish German cousins eat pretty plain food overall, although there was a large Italian and Polish population, so perogies, cabbage rolls, sauerkraut , Polish sausage and Italian sausage had become part of my family’s northern Pittsburg suburb diet. There are often perogies, cabbage rolls, and sausage served at weddings as well as at funeral lunches. Partly because these foods are sometimes prepared by church halls, and the foods reflect the comfort foods of the community.
The cousins that have married into Italian families enjoy a lot more Mediterranean foods and ingredients. This isn’t even ancient history. My cousins’ kids, who are Irish German Italian American, born in the 1980s and 1990s, have a much broader palate and are more open to trying new foods than the kids of my cousin who lives in Canton, Ohio (small town that is highly white bread in my limited experience) who married another German Irish American. Apparently, the kids of the Canton cousin (born in the 1990s) turn their noses up at most Italian foods other than pizza, and made jokes about eating eggplant long before the eggplant emoji jokes were a thing. (I’m okay with the eggplant jokes, I make jokes about their wedding vows and wedding banquet food, after their family weddings)
I have been to around 2 dozen Pittsburgh weddings and 3 Canton, Ohio family weddings (same extended family).
I can tell you, the Pittsburgh wedding cookie tables are a lot more interesting and better tasting when my cousins marry into a family with some Italians, Poles, Greeks or Croatians, compared to when they marry into a family that only eats chocolate chip cookies and shortbread. 