2 cups minus 2 tablespoons (8 1/2 ounces) cake flour 1 2/3 cups (8 1/2 ounces) bread flour 1 1/4 teaspoons baking soda 1 1/2 teaspoons baking powder 1 1/2 teaspoons coarse salt 2 1/2 sticks (1 1/4 cups) unsalted butter 1 1/4 cups (10 ounces) light brown sugar 1 cup plus 2 tablespoons (8 ounces) granulated sugar 2 large eggs 2 teaspoons natural vanilla extract 1/2 cup bittersweet chocolate chips, disks or fèves, at least 60 percent
cacao content sea salt