It is interesting what you learn from what people put out there, although I question the "remarkable vegetable that SAVED Americans during the Great Depression."

My maternal GF was laid off in the early 30's in Cleveland. He was a journeyman.
He and other neighbors hunted rabbits, etc., in the empty lots close to their homes and he became a true Master Gardener bc they really Did live off of what he grew. Can't ask him now, but I'm pretty sure he gardened more real estate than the postage stamp garden I witnessed growing up on Euclid Avenue--somebody here probably knows this area of Cleveland.
Still, he could have written the book on square ft gardening.
I don't EVER remember him telling us about growing MOST of the vegetables in this video.
I was amazed that last year was the first time I produced a tomato the size of the ones he routinely grew.
STILL, it begs the question of why we aren't growing these vegetables NOW.
I think I may make a list of these vegetables from the video, post it here and do some research on them, when I get a chance.
If you didn't know this, these you tube videos are segmented. You can jump to the next segment using your cursor, and the producer uses the same photo before introducing each vegetable.