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To make the starter: Weigh your flour; or measure it by gently spooning it into a cup, then sweeping off any excess. Combine the flour, water, and yeast in a small bowl, mixing until all of the flour is moistened. Cover the bowl, and let the starter rest overnight (or for up to 20 hours or so), at room temperature; it doesn't need to be placed somewhere warm. It will expand and become a bit bubbly.
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To make the dough: Combine the starter with everything except the raisins. Mix and knead to make a smooth, soft dough. The dough will seem dry at first, but as you knead it'll soften up.
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Place the dough in a greased bowl or greased 8-cup measure, cover it, and let it rise for 60 to 90 minutes, until it's noticeably puffy though not necessarily doubled in bulk.
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Gently deflate the dough. Knead in the raisins; your hands are the best tool here. If you have time, let the dough rest for 20 to 30 minutes; this short rest will make it easier to shape.
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Shape the dough into a log, and place it into a lightly greased 8 1/2" x 4 1/2" loaf pan. Cover the pan with a large overturned bowl, or tent it lightly with greased plastic wrap. Allow the dough to rise until it's crowned about 1/2" to 3/4" over the rim of the pan, 60 to 90 minutes. Towards the end of the rising time, preheat the oven to 350°F.
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Uncover the bread. Mix the cinnamon, sugar, and water, and brush it over the loaf. (You may have excess; set it aside and then brush it on a slice of toast for a sweet treat.)
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Bake the bread for 20 minutes. Tent it loosely with aluminum foil, and bake for an additional 20 to 25 minutes, until it's golden brown all over. When you remove the loaf from the pan, give it a gentle squeeze; it should feel stable, with good structure. If it wobbles or feels too soft, return it to the oven for 5 to 10 minutes.
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Remove the bread from the oven, and turn it out of the pan onto a rack to cool. Cool completely before slicing. (See "tips," below for details on how to make an incredibly flavorful grilled cheese using this bread as the base.)
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Wrap airtight, and store at room temperature for up to 5 days; for longer storage, wrap well and freeze.