Gingerbread Bells

INGREDIENTS

• 3 1/2 cups all-purpose flour (spooned and leveled), plus more for rolling
• 1 teaspoon baking soda
• 1 tablespoon ground ginger
• 2 teaspoons ground cinnamon
• 1/2 teaspoon ground cloves
• 1/2 teaspoon fine salt
• 3/4 cup packed dark-brown sugar
• 1/2 cup (1 stick) unsalted butter, room temperature
• 1 large egg
• 2/3 cup unsulfured molasses
• 6 cups confectioners' sugar, sifted
• 1/2 cup pasteurized egg whites
• 3/4 teaspoon cream of tartar
• Desired food coloring