"Barry Harmon" > wrote in message
. 15.254...
> Kenneth > wrote in
> :
>
> If you discover an old sourdough in the
> back of your refrigerator and want to nurse it back to health, stir any
> liquid that has accumulated on top back into the dough and transfer it to
> a
> clean containte.

I've seen this instruction in various places and it has never made sense to
me. There is probably alcohol in that liquid and I would have thought that
pouring off that fermentation product and replacing it with fresh water
would result in a more rapid revival.
Graham