spicy gingerbread cookies

INGREDIENTS

• 6 cups all-purpose flour, plus more for work surface
• 1 teaspoon baking soda
• 1/2 teaspoon baking powder
• 4 teaspoons ground ginger
• 4 teaspoons ground cinnamon
• 1 1/2 teaspoons ground cloves
• 1 teaspoon finely ground pepper
• 1 1/2 teaspoons coarse salt
• 1 cup (2 sticks or 1/2 pound) unsalted butter (at room temperature)
• 1 cup packed dark-brown sugar
• 2 large eggs
• 1 cup unsulfured molasses