Editing to share an Irish coffee anecdote. On September 11, 1901, Catherine O'Connor, age 17, who would become my grandmother, arrived from Ireland at Ellis Island, NY. Seventy five years later, in 1976, she returned for the first time on a family vacation and was introduced to Irish coffee as a great way to warm up a damp afternoon. While on that trip, my cousin asked her if they had Irish coffee before she emigrated. Her response, "Oh sure child, if we had this back then, I never would have left!"
Should you decide to share the blessing on that mug, make sure to pronounce the name of the evil one in the way my grandmother did. It's the Divil, don't you know!