Judith,
Years ago I sent away for some of the old Oregon Trail sourdough starter and used it for a couple of years. Things changed, we moved a few times and I killed the starter. Had to toss it.
I'll probably go back to them if nobody here has any, but I would assume it would be as easy as placing a dollop of the starter on a piece of parchment paper, spreading it out with a spoon, and letting it dry out overnight. At that point, one could fold up the parchment paper, shove it in an envelope, and mail it out. It wouldn't even have to be all the way dry, I don't think.
j
Judith Browning wrote:Jim, my starter is pretty new so probably not what you would want.
I'm not sure how one would send a fresh active one through the mail although it's possible to carefully dehydrate one.
It is pretty easy as Anne says to start one.
There's a step by step 'how to' that several of us participated in recently.
https://permies.com/t/231560/create-sourdough-starter