Where was Hawaiian pizza invented?

In the early 1960s pizza was still a novelty in much of Canada, drifting across the border from Detroit. Sam Panopoulos, who had emigrated from Greece as a young man, ran a restaurant in Chatham, Ontario, and started making pizzas after watching cooks in nearby Windsor. He was, by his own account, bored with the toppings.

So he opened a tin of pineapple. The sweet-and-salty idea borrowed from the Chinese-Canadian dishes he also cooked, and the name came straight off the label: the tin was from the Hawaiian Pineapple Company. Customers were doubtful, then kept ordering it.

Panopoulos died in 2017, by which point his invention had become one of the most argued-about foods in the world. When the president of Iceland said that year he would ban pineapple on pizza if he could, Canada's prime minister publicly stood up for what he called a delicious Southwestern Ontario creation. Not a word about Hawaii, which has never claimed it.