INGREDIENTS
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1 1/2 cups lukewarm water
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1 package active dry yeast (2 1/4 teaspoons)
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4 1/2 cups flour
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2 tablespoons light brown sugar
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2 teaspoons table salt
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1 large egg, separated
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4 tablespoons unsalted butter, melted
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2 tablespoons baking soda
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Coarse salt, for sprinkling
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