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Primost (or simply prim) is a Norwegian cheese made from cow's milk which has a soft spreadable texture providing a semi-sweet taste. The sweetness is derived from caramelizing the milk sugars of the whey as it is made. It is also known as mysost.
This cheese is very similar to Gjetost or Brunost cheese, except that Gjetost is made from a combination of goat and cow's milk or strictly goat's milk (Ekte Geitost). The caramelized cheeses are often served with dark bread or Norwegian flatbread, as a dessert cheese, or as a cheese melted into a variety of food dishes.
Video Primost
References
Source of the article : Wikipedia