Hi Froagi & Tattiheid!
Your suggestion about burnt wine as in brandy seems right Froagi.
Historically both corn, potato after the discovery of American continent and wine has been distilled although the latter one hasn't been distilled in Norway. Brennevin today is synonimous with "spirit" as a general term with everything that has 22% alcohol and more. Aquavit is indeed flavoured with herbs (and has been stored in sherry casks) and this was done for two reasons: for medicinal purposes and to disguise bad smelling/flavoured spirit. On a sidenote it's interesting to note that in Socrates
by Plato - Socrates claimes that too much of what is considered good isn't at all good for you (hardly surprising now but... ) . Socrates reasoning was that medicine is good, but medicine is also poison - hence too much poison/medicine will kill you!
Recent threads in here have also shown that there are a lot of phenols in some whisky and phenyl acid is the basis to make aspirin. Go figure!
No, "burning wine" as in "blistering the entire alimentary canal on the way through"!
sounds like nettles in fluid form....