Robert65
Major Obvious (recently promoted)
I've done it that way, starting with whole grain flour. The argument in favor is that the larger portion of the outer layer of the grain (bran) carries a larger inoculating population of yeast and bacteria, which is true, and the extra enzymes, minerals, and other nutrients in the germ and bran will jump start things. Also true. But you can also just start with all unbleached flour, which is now my preference (it has, I admit, been more years than I can count since I started my current sourdough, but thus is how I did it.) The argument here is that it is best to start a culture in the conditions you expect it to ultimately thrive in, and most of us regularly feed our sourdough unbleached flour.
The upshot is, you can start a culture using any flour you like, any hydration you like. What is critical is that the water be non chlorinated so as not to kill the few bugs you have, and to keep it loosely covered so as to allow oxygen access, but to keep bugs from the environment from gettng in as much as possible -- contrary to popular misconceptions, the bugs we want are present on the grain, just as traditional winemaking uses the yeast on the grape skin.
So there's more than one way to do it. But short story long, can't go wrong with advice from King Arthur. What should always be avoided is adding anything but some kind of flour and water. Extraneous sources of yeast and nutrients, like fruits, acids, etc., may yield comfortingly rapid onset of visible activity, but are not setting up conditions selective of organisms that will thrive in the long term in conditions we provide.
The absolute short version is: mix flour and water and cover loosely. When it has risen and fallen, however long it takes, discard some and add more flour and water. Repeat, repeat, repeat....
The upshot is, you can start a culture using any flour you like, any hydration you like. What is critical is that the water be non chlorinated so as not to kill the few bugs you have, and to keep it loosely covered so as to allow oxygen access, but to keep bugs from the environment from gettng in as much as possible -- contrary to popular misconceptions, the bugs we want are present on the grain, just as traditional winemaking uses the yeast on the grape skin.
So there's more than one way to do it. But short story long, can't go wrong with advice from King Arthur. What should always be avoided is adding anything but some kind of flour and water. Extraneous sources of yeast and nutrients, like fruits, acids, etc., may yield comfortingly rapid onset of visible activity, but are not setting up conditions selective of organisms that will thrive in the long term in conditions we provide.
The absolute short version is: mix flour and water and cover loosely. When it has risen and fallen, however long it takes, discard some and add more flour and water. Repeat, repeat, repeat....