Also that year, when the crew of the USS Voyager witnessed a star going supernova, Captain Kathryn Janeway commented "Who brought the champagne?" Neelix immediately became worried about not having brought any, but Janeway explained that it was only an expression. Later, when she went to her quarters, she discovered Q there with champagne, attempting to proposition her. He commented "You did say you wanted champagne?", a reference to her earlier remark on the bridge. (VOY: "The Q and the Grey")
Further mentions of champagne appear in the script for the Star Trek: Deep Space Nine episodes "Move Along Home", which compared the bubbling orange liquid drank by the Wadi party goers to champagne, and "For the Uniform", where it transpired that Quark had fraudulently billed Chief O'Brien for six cases of champagne. Both mentions were cut.
The call sheet for the Star Trek: Voyagerfirst season episode "Prime Factors" is listing champagne in the props section for the scene in Janeway's quarters. In the final aired scene however, no champagne was visible, only a thermos flask with what seems to be coffee.