I'm so impressed with your gardening!!! This sunflower relative grows very well where I am, but I've never attempted it, only seen it at farmers markets.
It's hard to use up a large crop of anything! I'm a big fan of the freezer, but of course following that route, I always have way too much stuffed in there . . .
This site says you can dry them, too.
And since I have a tendency to want to ferment anything and everything, I had to search this out also:
Fermenting Jerusalem artichokes is the one thing that has worked for me to significantly reduce the unwelcome farting effect they have! (Adding herbs and spices or pre-soaking in lemon juice hasn’t helped and neither has using different cooking methods or late harvesting. I haven’t yet managed...
backyardlarder.co.uk