While in Wimpyland : try replacing rye with barley -- the same 60-40 ratio (I spied yer Insta ):
I don't think I've ever seen barley flour for sale here, I'll keep an eye out though
so I might look into getting a proving basket and bake it on my pizza stone.
That is a splendid idea.
I have a proving basket now and I've been baking the dough on a hot pizza stone. Seems to be going well so far!
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Hooboy that looks good!!!