Might try something like that with the sourdough I usually use. Got a nice big cast iron pan already.

Sourdough that I have been making lately: add flour to bowl and pour in some boiling water. Mix and allow to cool, shouldn't be so much water that it forms a dough yet. Once cool, add sourdough starter and enough water to form dough. Then leave for a few hours or all day to rise and then bake.

The hot water reacts with the starches to gelatinise which cold water doesn't. Results in softer bread, I think it works by holding moisture better.