Lovely, silky combination of flavours. In lieu of Irish Cream, I used 5-10 ml extra Tia Maria plus about 25-30 ml fresh cream. Though I am sure the Irish Cream adds its own special flavours.
For me this is the perfect nightcap. It just has an overal cozy vibe. I can also really taste every invdividual ingredient, nothing gets lost or masked.
The Irish cream provides a luxurious texture to the nut/coffee combination, the only negative for me was the amaretto tended to dominate. I might reduce it a touch next time.
I thought this might be overwhelming with the list of strong flavored ingredients, but this turned out great! If you don't like nutmeg, it can be left out without ruining the cocktail, but if you do it really helps to open up the flavors. Definite winner on my menu.