In large sauce pan melt butter. Add sugars and spices. Cook for 8-10 minutes over medium heat until mix is smooth and caramelly. Turn off heat. Fold in ice cream until completely melted. Refrigerate. Store covered.
To make drinks in Irish coffee cups: Place 3 tablespoons of rum batter. Mix in 1½ ounces or a jigger of dark rum. Top with boiling water. Stir. Enjoy. Repeat as often as necessary.