On ice. This is like liquid rum cake. When warm the alcohol is a little hot, but that's the first thing to go as it cools. It's so buttery it coats your lips. It would feel almost too dessert-y if it didn't dry up fairly quick and leave you with some allspice and black pepper. And the butterscotch flavor seems genuine. You could sip this after dinner in a snifter but on ice is perfect for me, you get a full range of character