Via Serious Eats comes this story from The Norway Post about an aged cheese produced in Norway since Viking times called gamalost.
Gamalost is a hard cheese made from soured skimmed cows milk. As it ages, it ferments and turns brown. You can see some photos of it being made on a farm in Oregon here, and you can learn the lyrics to the “Gamalost Song” here.
Gamalost is only produced commercially in the town of Tine in Norway, which is also the home of the much more familiar Jarlsberg. Not surprisingly, it’s not sold outside of Norway — even among Norwegians it’s not really all that popular.
