A fascinating, supposedly Ontario-invented sandwich is breaking the internet as of late, with Canadians claiming they've never heard of it in their lives.So, what is the truth behind the mysterious Steak Canadian sandwich?Canadian cuisine boasts plenty of shining stars, from poutine and ketchup chips to maple taffy made in a fresh bed of snow. One dish that doesn't get any airtime whatsoever is the Steak Canadian.I mean, seriously, no airtime. I had never heard of this concoction before a video, which now boasts nearly 1M views on YouTube Shorts, came across my feed. Suffice it to say, I was mystified, even if my appetite had entirely disappeared.    View this post on Instagram           A post shared by Corner Kitchen Rotherham (@corner_kitchen_rotherham)The video, aptly titled "What is a STEAK CANADIAN?" echoing my own thoughts, was posted by a restaurant called Count...