So, a Greek guy in Canada made an Italian staple into something that he thought would represent a Hawaiian cuisine (even though it was just the can, many people naively believe it truly is a Hawaiian dish)
Once someone told me they thought that’s how they ate their pizza over there. Lol.
Nevertheless, if I were in Canada at that time, I would have visited his restaurant and ordered one of the originals. It’s not the best pizza topping but it is also not the worst. (I hate anchovies, fish of any kind or mushrooms on my pizza. Mushrooms are good in other dishes.)
I’m glad you asked! That’s the fun bit. The sauce, called shōyu in Japanese, became popular among westerners and they called it “soy sauce.” When those westerners traveled to Japan and were shown the beans, they called them “soy beans” because they were used to make the sauce.