Have you or anyone you know carried a sourdough starter while backpacking?
I recently read a book that suggested a backpacker in the early 70's used a sourdough starter while backpacking. I know things have changed a lot since the 70's but it struck me as pretty unusual. I did find one old post here from 2004 by Texas Dreamer about sourdough - "This is better for a shorter, well planned trip. Having sourdough getting overworked because you didn't have time for a long, drawn out, supper stop can cause a big mess".