DEAR MISS MANNERS: It appears the modern way to serve coffee is in a mug. When being served this way, what do you do with the spoon after you stir in condiments?
I like the old, traditional (and more civilized) way to serve coffee to guests, that being with a cup and saucer and their own spoon for stirring cream and/or sugar.
GENTLE READER: You have two options, the choice of which will depend on how much you wish to create a teaching moment for your host.
The first is to place the spoon on the nearest available surface, which Miss Manners hopes is not the piano or the cat. As your host may object, whatever the surface chosen, it might instead be preferable to ask where you should put the spoon.