INGREDIENTS
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2 cups minus 2 tablespoons (8½ ounces) cake flour
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1⅔ cups (8½ ounces) bread flour
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1¼ teaspoons baking soda
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1½ teaspoons baking powder
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1½ teaspoons coarse salt
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2½ sticks (1¼ cups) unsalted butter
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1¼ cups (10 ounces) light brown sugar
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1 cup plus 2 tablespoons (8 ounces) granulated sugar
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2 large eggs
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2 teaspoons natural vanilla extract
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1¼ pounds (20 ounces) bittersweet chocolate disks or fèves, at least 60 percent cacao content (I used Ghirardelli bittersweet chocolate chips)
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Sea salt (optional)