> Be also interesting to know the etymology of the word.
> In Old Norse - the verb luta means to bow down or to
> yield - or to pay homage. Any ideas.

http://www.bartleby.com/61/78/L0297800.html
http://www.m-w.com/cgi-bin/dictionary?va=lutefisk&book=Dictionary

Can anyone explain in more detail how the form lute- arose? Swedish
has lödder "lather". I don´t know much about the sound changes
involved here, but Old West Norse <au> becomes <ö> in Swedish. Is
there a regular rule behind the doubling of the <d>?

Llama Nom