Many thanks to Martha’s Mom for this recipe and her 40 year old starter that has since been passed on to San Francisco and Geneva. Here it is word for word:
The night before making bread, take the sourdough starter from the refrigerator. Put it in a large mixing bowl and mix it with 3 cups of flour (I always use King Arthur white flour…) and 2 cups of lukewarm water. Cover the mixture tightly and set it in a draft-free place for the night. Room temperature is fine.
Next morning, before doing anything else, remove one cup of the mixture in the bowl and return it to your sourdough storage container. Close the container tightly and put it back in the refrigerator. This is your starter for your next batch of bread.
To the starter remaining in the bowl—and there will be quite a bit of it—add:
- 1 egg
- 1/4 cup vegetable oil
- scant teaspoon salt
- 1/4 cup of sugar*
mix as well as you can and then add gradually:
flour—enough to make a bread dough, about 3-5 cups. Knead thoroughly, until all the flour is absorbed into the dough, and the ball of dough feels resilient and elastic. This takes 3-5 minutes.
Return the dough to the mixing bown and cover tightly. Let rise until doubled in bulk, about 2-3 hours. Then knead again, shape into loaves, cover, and let rise again, another 2 hours or so.
Back at 350º F for 45 minutes.
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