"Mike Dilger" > wrote in message =
...

> I (add Rumsford) "just because". It probably isn't necessary.

Possibly not.

> Incidentally, the one thing I don't like about this bread is that it's =
never
> very sour. Now I'm trying to get it sour. I'm letting a sponge sour =
past the
> frothy stage, and I think I'll have to add commercial yeast to get it =
to rise.

What you are telling us is extremely depressing!

Or perhaps you are embarking upon a heuristic exercise?

You might try Googling "souring the sponge".

---
DickA