Add brown sugar, water, ginger, cinnamon, allspice, clove, cardamom, black pepper, and nutmeg to saucepan over medium heat and stir vigorously to dissolve all the spices and sugar.
2 cups brown sugar, 1 ¾ cup water, 1 ½ tablespoon ground ginger, 3 teaspoons ground cinnamon, 2 teaspoons ground allspice, 1 ½ teaspoon ground clove, 1 ½ teaspoon ground cardamom, 1 ½ teaspoon ground black pepper, 1 teaspoon ground nutmeg