Pumpkin Mousse Parfaits

Name: Pumpkin Mousse Parfaits
Ingredients: 1/4 cup dark rum; 1 packet (2 teaspoons) unflavored gelatin powder; 1 (15-ounce can) pumpkin (not pie filling); 1/2 cup granulated sugar; 1/2 cup light brown sugar, lightly packed; 2 extra-large egg yolks; 2 teaspoons grated orange zest; 1/2 teaspoon ground cinnamon; 1/4 teaspoon ground nutmeg; 1/2 teaspoon kosher salt; 1 1/2 cups cold heavy cream; 1 1/2 teaspoons pure vanilla extract; Sweetened whipped cream; 8 to 10 chopped ginger cookies; Crystallized ginger, for decoration, optional