Food I will surely NOT eat that are known to be big in Iceland:
Lamb - no way, love the taste as I know it well from childhood, but that's not going to ever happen. I'll wear wool, but not eat their meet no matter how grass fed they are.
Puffins
Reindeer
Hakari (shark)
Horse--- oh my god, no.
Haddock
Whale
Sheeps head
Rams testicles