Dried fish with butter is a common and dull thing to eat. Chew it very carefully and eventually it will taste a bit like fish. Otherwise it mostly tastes like paper. More adventurous hikers may want to try sheep's head, ram's testicles and old shark. Sheep's head is nice, but a bit chewy.
Old shark has a cheesy taste to it, and ram's testicles are down right yuccy.
However, they are supposed to increase your sexual drive, so what the heck. What you should know of Icelandic names is that almost no one ever uses the last name. The last name is mostly just a reference to who you father was. Therefore, Asgrimur Magnusson's father was called Magnus. So, it's a safe bet to use the first name when addressing someone on Iceland.