suggestions for Indigenismo to nonindigenous audience

[Craig Berry]

On Mon, 19 Jul 1999, Mary Hopkins wrote:

> Onions are Old World, too, though they're just as thoroughly integrated
> into Mexican cuisine at this point as tomatoes and peppers are into
> Italian. MH

All varieties?  I thought that there were "green" onions of some variety
in the New World, but I can't recall where I got this impression.