[balaji1]

would it be possible to cross the plants the other way? Make the European/Asian ones big and tasty like the American ones. I am sure there are people thinking about this full time and would have much better ideas, but just wondering.

[pjlegato]

Yes. The American Chestnut Foundation has been working on that for several decades; not quite there yet, but it's probably possible.

More at https://tacf.org/