During the week we just use a breadmaker overnight and a recipe that started out as one that came with the instructions, but has morphed over time to use a balance of white/wholemeal flour that we prefer as well as being tweaked slightly depending on what yeast is available, for example. We find that results vary depending on the batch of flour, yeast, humidity and temperature of the house despite being made in a machine.
At the weekend my wife often makes sourdough using a starter that she's had going for years (my brother has one too -- I believe he calls it Sebastian
). Quite possibly the recipe for that is never the same twice. Last weekend for example, she made a loaf of bread that used some of my home-brewed stout, but also made pizza bases and garlic bread (from the same starter) that didn't.
One of the fascinating things about making bread seems to be that if you go to the lengths of finding flours that aren't sold in supermarkets for example (or use home-brewed beer), the results can be a little variable because you're starting with ingredients that may not be quite the same every time. Even now once in a while we end up with a loaf that is unusually light and soft for instance, or at the other end of the spectrum, is suitable for use in hand-to-hand combat
James