I have a shaving mug, I think is called a scuttle but I can't for the life of me figure out how to use it. It is the type without a spout and the top is divided in half, and half of it is sealed off eccept for some holes in it about the size of a pencil. As I understand it you put hot water in the bottom and make a lather in the top and the water keeps it hot. Problem is the soap puck is round and the mug top only has room for half a cake of soap and it is really not deep enough for that. Am I supposed to make a lather in another mug and put it in that mug. Seems like a lot of trouble.