One of my favourite breads, the Barbecue Bread, employs yoghurt and milk but no water at all.
A couple of days or so back, I experimented with my Dutch Oven Bread by substituting kefir for the water in the recipe. I had to add a little extra to get the dough looking and feeling about right, and I set it to rise in the usual way. It took about half as long again as the regular water-based version to rise properly, and I baked it at the regulation 210C.
The resulting loaf was a little more dense and a little softer in texture, with an excellent flavour. The most significant change however was that three days after being baked, it was still “fresh” and palatable, where the water based version is beginning to dry a little by the end of the second day.
It’s a little more expensive to make than the usual recipe, but I’ll certainly come back to this when I’m baking for a trip away in the van.