Chewy Chocolate-Gingerbread Cookies

INGREDIENTS

• 7 ounces best-quality semisweet chocolate
• 1 1/2 cups plus 1 tablespoon all-purpose flour
• 1 1/4 teaspoons ground ginger
• 1 teaspoon ground cinnamon
• 1/4 teaspoon ground cloves
• 1/4 teaspoon ground nutmeg
• 1 tablespoon unsweetened Dutch-process cocoa powder
• 1/2 cup (1 stick) unsalted butter
• 1 tablespoon freshly grated ginger
• 1/2 cup dark-brown sugar, packed
• 1/2 cup unsulfured molasses
• 1 teaspoon baking soda
• 1 1/2 teaspoons boiling water
• 1/2 cup granulated sugar