Kate's Ski Biscuit Cookies

Ingredients

• 1/2 cup (1 stick) plus 1 tablespoon unsalted butter
• 1/2 cup packed dark-brown sugar
• 2/3 cup dark molasses
• 1 teaspoon baking soda
• 1 1/2 teaspoons ground ginger
• 1/2 teaspoon ground cloves
• 1/2 teaspoon ground nutmeg
• 1/2 teaspoon ground allspice
• 1/2 teaspoon ground cinnamon
• 1/2 orange, zested
• 1 tablespoon dark rum
• 1/4 teaspoon pure vanilla extract (optional)
• 2 1/2 cups flour, sifted, plus more for work surface
• small silver dragees, for decorating
• 30 strips candied ginger, for decorating