My German nana taught me this and it’s stayed with us since!

Melt butter in a large pot over medium heat. Sauté onion until soft and translucent.
Add chopped cabbage, season with salt and pepper. Cook until cabbage is tender, about 20 minutes.
Whisk flour and salt in a medium bowl. Beat eggs and milk in a separate bowl. Gradually add wet mixture to dry ingredients, stirring until a thick batter forms.

SEE NEXT PAGE