In reply to Dave Garnett:
That makes it sound like Pernod, or Ouzo or something. But it's got nothing to do with aniseed.
Aquavit is more-or-less the Norwegian equivalent of flavoured vodka; the exact flavours differ by producer and, for example, the time spent in the cask but, done right, it's an excellent drink.
Try a bottle of 'Linie' if you get the chance.
Post edited at 22:49