INGREDIENTS
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3/4 cup (180 ml) whole or low-fat milk, heated until just tepid
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1 envelope active dry yeast (1/4 ounce, or 2 1/4 teaspoons)—see Note
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6 tablespoons (75 g) sugar
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4 tablespoons (55 g) butter, salted or unsalted
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3 ounces (85 g) bittersweet or semisweet chocolate, coarsely chopped
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1 1/2 teaspoon instant coffee or espresso powder (optional)
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1 large egg
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1/2 teaspoon vanilla extract
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3/4 teaspoon sea salt
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2 cups (280 g) bread flour
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1/4 cup unsweetened Dutch-process cocoa powder
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3/4 cup (3 1/2 ounces, 90 g) chocolate chips or coarsely chopped bittersweet or semisweet chocolate
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1/2 cup (70 g) toasted pecans, walnuts, almonds, or hazelnuts, coarsely chopped (optional)