Ever had a potato in your cocktail?

Yesterday I took my wife out for a brunch date. (Yes, we still date, even after knowing each other for over 25 years!) We went for brunch, and I ordered an “Irish Mary”, a variant on the Bloody Mary that used Jameson’s Irish whisky instead of the traditional vodka. It was a delicious cocktail. The interestingly, though, along with the usual lime, there was also an olive and a half of a boiled potato in the cocktail. The potato seemed to absorb the flavor of the other ingredients (tomato, pepper, salt, etc), and I did not find it at all objectionable. I just had never seen a potato served in a cocktail like that.