INGREDIENTS
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1/4 cup baking soda
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1 ( 1/4 ounce) package active dry yeast (about 2 1/4 teaspoons)
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1/2 cup warm water (between 100°F to 115°F)
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1 tablespoon firmly packed dark brown sugar
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3 1/4 cups unbleached bread flour
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1/2 cup cold pilsner-style beer
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2 tablespoons unsalted butter, cubed, at room temperature, plus more for greasing the bowl
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2 teaspoons fine sea salt
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1 egg yolk beaten with 1 tablespoons of water
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Toppings: coarse salt, pretzel salt, poppy seeds, caraway seeds, sunflower seeds, fennel seeds, pumpkin seeds, or a mixture