I wish hotels and restaurants wouldn't try and get to fancy with some of their dishes. Take the humble, but essential breakfast, pat of butter.
OK, little swirls or balls look fine and dandy, but to submerge them in iced water is stupid. It makes the spread rock hard and your toast soggy with the excess water that invariably clings on, no matter how much vigorous shaking you offer.
Let the butter soften naturally at room temperature and be done with it, please.