Once you have a natural starter alive and kicking on your counter, stealing the occasional banana from the fruit bowl, it’s hard to go back to baking bread with commercial yeast.
Not only would that feel like a bit of a betrayal (though you can always blindfold the jar of starter or work under the cover of night) but every loaf is an opportunity to strengthen your starter as well as your skills. And frankly, you’ve gotten used to the vivid flavor and lasting freshness of sourdough-powered bread, so you’re a bit spoiled.
Most breads leavened with commercial yeast can be leavened with a natural starter. It is just a matter of converting the recipe; all you need is a calculator and a play-it-by-ear disposition.
That’s not to say you want to limit yourself to those recipes written with a starter in mind: even though baking with a natural starter has the ancestral high ground and is regaining considerable popularity of late, it is still practiced by a minority of home bakers, and most of the bread recipes out there call for commercial yeast.
But of course, most breads (see caveats below) leavened with commercial yeast can be leavened with a natural starter. It is just a matter of converting the recipe; all you need is a calculator and a play-it-by-ear disposition.
So, how do you go about it? There is no single method* but I have had good success with mine, so I wanted to share it with you below. If you want to chime in with your own method and experience, I’ll be most interested to hear them.