A plea for metallophytes. Every damn plant group has a lobby these days. I bet some of them are crop wild relatives though.
As does almost every style of food preparation. Although I have to say I myself can never read enough about fermentation.
This video is advertised as being about food preservation, and I was going to link it to the above, but it turns out to be about seed storage. Which is interesting enough, and important too, but not the same thing. A clever video, which I personally think doesn’t in the end make its point.