I’d say one of those immortality peaches from Chinese myth. Probably one of the eternal youth ones that blooms every six thousand years.

I thought that it was fairly normal… until you got to the malt vinegar.

That wouldn’t fall under a single trope, but would be a combination of several tropes. After The End would be a requirement, and for technology that is like magic to those who live in the world would be Lost Technology.

The only real issue I see with organic food is that it excludes GMOs

At best, organic food offers the same nutritional value as non organic food. At worst, it’s less nutritious and more expensive.