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The sourdough pumpernickel is an instant-yeast-assisted bread, using the sourdough starter for flavor. There's an option for pure sourdough, but I went for the faster and more reliable combination method. The bread is also not a 100% rye, using 2:1 bread flour to pumpernickel plus the flour in the starter, which in my case is probably mostly rye. The procedure is the familiar-by-now multi-day procedure: refresh the starter one day, make a rye starter with that, pumpernickel flour, and water and let it work for several hours before refrigerating it, then make the dough and bake the next day. For the dough, it's a mixture of the starter, bread flour, brown sugar, coloring to get the dark pumpernickel color--I had liquid caramel coloring, though coffee or cocoa powder are options, salt, instant yeast, fresh bread crumbs, oil, and water. All that is mixed quickly to not turn the rye flour gummy, then it rises for 2 hours. I decided to bake this one in a bread pan instead of using the hearth baking method--Reinhart gives directions for both.
The first rise went fine, if a little slow--I moved the dough into my warming drawer on "Proof" after an hour and a half and very liitle rise. (I've been adhering to Reinhart's instructions for long, slow, room temp rises most of the time.) I shaped the loaf and put it in a pan for the second rise, supposedly for 90 minutes or so. This time it went straight to the proofing drawer, but even after 2 hours the dough had barely crested the loaf pan. I went ahead and baked it after another 30 minutes, hoping for some oven spring, but alas, there was none and the loaf is a little flat.
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