Where does “Schafkäse” come from?

Schafkäse (German) comes from German Käse, from Middle High German kæse, from Old High German kāsi, from Proto-West Germanic kāsī, from Proto-Germanic kāsijaz, from Latin cāseus, from Proto-Indo-European kwat- — to ferment, become sour; to boil.

Ancestry of “Schafkäse”, step by step

Schafkäse traces back through two separate lines of ancestry.

via German Käse

StepLanguageWordMeaning
1GermanKäsecheese; nonsense
2Middle High Germankæsecheese
3Old High Germankāsicheese
4Proto-West Germanickāsīcheese
5Proto-Germanickāsijazcheese
6Latincāseuscheese
7Proto-Indo-Europeankwat-to ferment, become sour; to boil

via German schaf

StepLanguageWordMeaning
1Germanschafsheep
2Middle High Germanschāfsheep
3Old High Germanscāfsheep
4Proto-West Germanicskāpsheep
5Proto-Germanicskapąshape
6Proto-Germanicskapjanąto make, to create; to shape
7Proto-Indo-Europeanskab-to cut, split, hew, shape; to cut, split, carve,...
Every word from Proto-Indo-European kwat-