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.

Or you can make it a little pond.