November 25, 2003
Lab Note Book [7]
[Updated Nov, 24, 03]
Yes, the [7] means its sourdough. I think of it as a hobby. I’m not baking this stuff to eat. I can’t eat that much bread. I know I should make bread crumbs or croutons with the left overs but I don’t need a lot of those either. I toss loaves of bread away after I cut them to see what the texture and crumb is and have a slice or two with dinner. I don’t love sourdough, I love learning about sourdough. Also, it keeps me from writing very much about politics which is a good thing.
Anyway, the usenet FAQ convinced me that there are technical reasons, perhaps even scientific reasons why one has to feed the starter with more flour and water than you’ll take out, and that really heavy feeding is good for the culture and good for the bread making process. More about that later.
Last night the quarter cup of new starter I cloned doubled in size in under 3 hours and at 5 hours it had clearly reached it’s peak. By hour 7 it had started to shrink. Twelve hours later it was the same size as I started with. What did I learn about that? I learned to read the FAQ and my library book with a perspective of experience.
I left the cloned, now flat deflated starter on the counter during the day. I don’t want to see what it does whens it’s chilled and re-primed. I want to see how fast it can consume a huge feeding. It’s an S-shaped curve for leavening with food (flour) on the Y axis and time on the X. OK, there’s a Z axis of temperature. What comes after the Z axis? The O axis for obsession, perhaps?
It’s an hour and a half into the heavy feeding and it looks to me like it’s going to double in volume around the 3 or 4 hour point. If it does, I’m going to make a sponge and let it go overnight to develop the sour taste. From what I read, the yeasts do their thing for a few hours (leaven) and then when they overpopulate and die off, the lactobacillus start stinking it up. By aggressively feeding the starter, the theory is that one can get maximum leavening and then sour. It didn’t make sense to me either until I remember that yeasties tend to grow geometrically or is it exponentially (help?), which I think means the time to maximum leavening is inversely related to volume. If a cup of goo takes 3 hours, say, then 2 cups of go will be ready in less than 6 hours. Maybe or Maybe not because if that’s true could I build a time machine with a whole lot of bags fermenting flour?
Fermenting barley and changing time would be a different recipe ;^)
[Next Day, Nov 24, 03]
Looks like another learning experience. The sponge was incredibly soupy after 12 hours but was still bubbling. I added the dry ingredients (a little less whole wheat this time, a lot more white bread flour) and I kneaded it by hand for 20 minutes adding flour until it wouldn’t take anymore. Perhaps. I formed it into a round ball on the cookie sheet, covered with plastic and let it rise. Looked good at 1 hour. By hour 2 it had fallen and spread. I’ve already made those kinds of loaves. I know what’s going to happen.
It’s time to invent plan B which is to punch it down and reshape it for the loaf pan Let’s try for a second rise. Miraculously after two more hours it looks like a loaf of bread that’s ready to bake. I would have let it go longer but the surface was starting to get moist and I have reason to believe that signals a imminent collapse.
Oops, I forgot to spray the loaf pan with non stick spray. I was able to shake it out with only minor damage. The bits that stuck to the pan taste fine. After cooling, I cut it in half. Actually the texture is getting there, it was a little soft, probably because its was still warm or not baked enough, but there we tunnels, not a lot and not very big, but the texture is opening up with every experiment.