I thought for this post I would share some things I have learned so far during this journey. Mainly this will be about what I have discovered about what I like and don’t like and what I have found works for me. I am still experimenting and learning so what I post here could change over time.
First, I’ve discovered I like mild sourdough breads as opposed to “sour” sourdough breads. That means low inoculations of starter and a young leaven. It also means I keep my starter mild by discarding most of it each day and feeding it a lot each day. When I first open my starter each morning it smells very “wheaty”. There is no acidic or sour smell at all. On the rare occasions I have missed a feeding, the next day that sour smell is already there. It also means that my starter stays on the counter and not in the fridge. There are two acids that naturally form in starters, lactic acid and acetic acid. At room temperature mainly lactic acid forms (think milk). At refrigerator temperatures mainly acetic acid forms (think vinegar). That doesn’t mean I wouldn’t store my starter in the fridge if I was going away for a week or two. I would, however, leave it on the counter and refresh it daily for at least a week before baking bread when I got home.
I find I like the flavor of bread with slow fermentation, say 8 hours, compared to a shorter fermentation or 4 hours. Two main factors impact fermentation time. Temperature and how much starter is used. Some of the first sourdough breads I baked called for both a 3+ day old cold fermented pre-ferment plus a large amount of starter in the dough. While the flavor was good, my wife and I prefer the flavor of the Tartine Country Sourdough that gets all of its leavening from an overnight leaven that has a small inoculation of starter. We also prefer it with an 7 or 8 hour fermentation at room temperature, 67F, that a 4 hour fermentation in the proofer at 78F.
My longest fermenting bread dough, so far, was the rye bread I posted a few weeks ago. That went 6 hours in the fridge and 14 hours on the counter. That was also the highest hydration dough I have worked with at 83%. It was awesome tasting.
Bakers percentage is an interesting tool that makes life easier for the baker once they get used to working in grams. It simply refers to the total weight of flour in a formula as 100% and the percentage each other ingredients weight is of the total flour weight.
In the case of Tartine Country Sourdough the total flour is 1000 grams (100%), bread flour 900 grams (90%), Whole Wheat flour (10%), water is 750 grams (75%), leaven is 200 grams (20%) and salt is 20 grams (2%).
Where the percentage also comes in handy is when experimenting with converting a yeasted bread in cups and liquid ounces to a sourdough bread in grams. Once the original recipe is converted to grams, the bakers percentages can then be calculated. From that point a percentage can be chosen for the amount of starter or leaven, say 20%. Take 20% of the flour weight and that is the amount of starter or leaven to use. Either starter or leaven will be 50% flour and 50% water so we now know how many grams of each are in the starter. If we subtract the flour in the starter from the original amount of flour and the grams of water from water in the original recipe we should be left with a dough with the same amount of flour and water with no yeast needed for leavening. Not all yeasted breads can be converted to sourdough but a basic yeast, water, flour and salt recipe without too many other ingredients should work.
The other place knowing the bakers percentages can help is in scaling a recipe. For example, You have a sandwich loaf recipe that calls for a 4-1/4” x 8-1/2” bread pan but you only have 5” x 9” pan. The original amount of dough would bake up fairly flat in the larger pan. The first pan is roughly 36 square inches while the second is 45 square inches or 25% larger. So if we multiply the flour by 1.25 to get a new flour amount and use the bakers percentages to calculate the amounts for the remaining ingredients, we should have dough that bakes up to a nice height in the larger pan.
When I first started baking recipes from Northwest Sourdough, I observed that my dough when first mixed looked much stiffer than Teresa’s did. It finally occurred to me that since I was using different flours than she uses, my flour was probably absorbing more water than the flour she uses. I started adding extra water a few grams at a time until I got a dough that looked the the dough in the videos. I had much better results from then on. So now I know that if I’m going to make a new recipe from one of her courses that I need to add a couple extra percent of water.
That’s enough rambling for this post. I need to get working on a formula for this weeks bread.