Sourdough Baguettes
Ingredients:
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1 cup sourdough starter
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1 ½ cups warm water
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1 tablespoon active dry yeast
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5 cups all-purpose flour, or as needed, divided
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2 tablespoons white sugar
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2 teaspoons salt
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½ teaspoon baking soda
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2 tablespoons cornmeal, or as needed
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cold water, as needed
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1 tablespoon melted butter, or as needed, divided