I adore sauerkraut, totally love it. It's the sourness that makes my nose sweat that I appreciate, and the weirdly dank (for lack of a better word) taste that I totally adore. This recipe due to all the cheese in it kind of dumbed down that sour sauerkraut experience and made it a rich, crispy, textural experience. Really amazing tart, but very very rich.
It is made from sauerkraut (I simply use Bavarian wine sauerkraut, add a finely diced onion that's been sautéed until tender in a bit of butter and olive oil, some juniper berries and a few caraway seeds and call it good. If you eat meat you can and should use speck, or double smoked bacon instead of the oil and butter - it imparts a wonderfully rich flavor). Then you slice up some munster cheese place it on top of the sauerkraut, make a simple egg custard and pour it on top. Bake and voila! An amazing savory tart. Delicious!
Someone made it at school using a stinky cheese (maybe an aged Munster), but man did that stink up the kitchen. All morning people were asking what died. When we got to try a piece however, it was utterly amazing. Stinky cheese = good cheese.