Started my first Tartine starter yesterday- and it took off! Doubled in volume and bubbling in 30 hours. When do I feed it? Doesn't fit any descriptions of any posts I've found. Tartine talks about feeding on day 3 or 4 when it is barely bubbling. Don't want to mess this up. do I feed now or wait till it starts to subside? My house is a consistent 72 - 75F.
First off: what does it smell like? Because that will tell us a LOT.
instead of pineapple juice, the activity you are seeing is probably bacterial and that is perfectly normal. As Stephanie notes, the active organisms in this phase often produce strong, even foul, odors. That, too, is perfectly normal. After a day or three of the present hyperactivity, it will probably go flat and still for 2-4 days. This is where a lot of people assume that their starter has died and then throw it away. It hasn't and you shouldn't. It is simply that a less frothy, less stinky group of bacteria is now at work. As each population flourishes and then dies, the acidity in the mixture gets ever stronger until it reaches a level that is hospitable to the yeast. They have been there all along but not really able to do much of anything until conditions are acidic enough for them to flourish. Once they do wake up, you will notice a new surge of bubble production and that the odor shifts to a pleasant fruity or winey note.
Keep following the feeding regimen that you have selected and let nature take its course.
Paul
so I can't offer advice on that, other than to say follow Mr. Robertson's directions.
If you want to experiment with another approach that seems to work for just about everyone that has tried it, read about the Pineapple Juice Solution, by Deborah Wink. The link will take you to Part 1. There is a link at the bottom of that post to Part 2. It is lengthy but extremely helpful for an understanding of what is going on in a starter. Part 2 has a recommended regimen for beginning a new starter, based on the information presented in Part 1. It is simple and much quicker than a water-based starter because it bypasses the first few days of stinky and/or comatose behavior.
Paul
Will start it up tonight. Can't wait to try baking my first loaf. If both of these starters work, I'll have two to work with until I'm sure one is working properly.
Linda
It's a bit of a tradeoff. You want the bacteria to work at lowering the pH, so you want to make sure they have food. At the same time, feeding dilutes the mixture, causing the pH to rise and delaying the yeast from reactivating. I wonder how much food the bacteria actually consume. It may be that simply stirring the mixture to redistribute the food and bacteria would be enough, rather than adding more flour and water every day.
The first time I successfully made a starter, I only fed it after I saw activity. I didn't know about the gas-producing bacteria then, so after it rose on the second day, I fed it. Then it went dormant, and I would just give it a good stir every twelve hours instead of feeding it. Eventually, the yeast woke up, causing the starter to almost triple in volume. From then on, I fed it every twelve hours.