Probably best to wikipedia them Sector 7 as you'll get lots of photos and info
Tonight I got my Gjetost.
It is very sweet, caramelly, goats milky, fudgy cheese that I'm eating on rye and with a bit of apple and mostly on its own in thin slices. It's pretty unique. One of my earliest childhood memories is of eating Gjetost but I haven't had it in about 10 years so I'm thoroughly enjoying it. We used to peel it with a vegetable peeler and let the transparent slices melt in our mouth. It's made from boiling the whey and cream down to an rich brown evaporated state. I'm sure it is very bad for you