For the Tartine Bread starter (which I’ve named Francis*), I’ve been roughly following the original amounts and proportions that Chad Robertson lays out in his book Tartine Bread. As I’ve said in earlier notes, for daily feedings he has you discard all but 20% of the starter and then add to the remaining blorb an equal mixture of flour and water. I believe he says something like “amount doesn’t matter.” But I’ve been adding back the same weight of stuff I’ve discarded. Which, yes, as my friend John Wozniak points out, is pretty wasteful of flour. (In fact, I’m now more than halfway through my two 5-pound bags of white and whole-wheat flours just on growing the starter alone). Flour is relatively inexpensive, and I anticipate I’ll modify the feeding once I make the recipe exactly according to the book. Continue reading “Tartine Bread, Day 11: Need to formalize starter proportions for Cavanagh”