Gamalost (also Gammelost, Gammalost), which translates as "old cheese", is a pungent traditional Norwegian cheese, which was once a staple of the Norwegian diet. Like many traditional Norwegian foods, such as flat bread, dry salted meats and stockfish, Gamalost could be stored for long periods without refrigeration.

Can we draw the following conclusion?
Gamalost is a major produce of Norway
It's impossible to say