1] Stir cider and brown sugar in a large mug or cup, and then add the cinnamon stick...

2] Microwave on high [100%] until cider boils, 2 to 2½ min... Stir in rum, top with butter and ground nutmeg...

From the Sharp Carousel Microwave Cook Book and Fred Goslin in Watertown Ny, on Cyberealm Bbs (315)-785-8098