No one I know who has tried to eat Sunchokes tried them more than twice: once boiled and once fried. Even the cows won’t eat them.
In my area, they have become a wild invasive species. Anyone who wants them can find them from Spring to Fall by the leaves and flowers. I never have seen them dug up, anywhere, in over 30 years.
detailed instructions with pics for storing seed potatoes
http://alpinegarden.blogspot.com/2010/03/sprouting-potatoes-what-to-do.html
photo of potato berries. These are produced on the top of the stalks at the end of the season. The seeds are inside the berry. Potatoes and tomatoes are related.
http://www.backyarddiva.ca/are-my-potatoes-growing-tomatoes/
Mature potato seeds and a place to buy them
http://www.doublehelixfarms.com/true-potato-seed-TPS
The first thing I read is potato berries themselves can’t be eaten as they may be poisonous. I’ll have to study all that information and get back to you privately.
The Sunflower tuber I’m speaking of is the white tuber that looks like a Russet potato - not the kind with all the bumps on it. The bumpy ones are common but not the white variety. The white variety is grown for food.
I was given Jerusalem artichokes by someone, planted some, tried to cook a batch of them just once.
I had to throw them away, after a few bites. I found them really loathesome. I suppose if I was starving I’d like them, if there was nothing else to eat.