Zwiebelsoße (Zwiebelrahmsauce)

Zwiebelsoße sits on the German table wherever a pan has left good brown bits behind: with Frikadellen, calves' liver, pork chops, Spätzle, boiled potatoes, or the Sunday roast. In Swabia and Baden the cream version belongs naturally beside Spätzle, the little egg noodles that drink sauce without argument. Further north and west, cooks often keep it darker, more stock than cream, sometimes with beer or mustard. Im Norden anders, im Süden anders.

The sauce is simple, which means it has nowhere to hide. The onions decide everything. Cook them too hot and they scorch bitter before their water has gone; cook them slowly and the sharpness leaves, the sugars come forward, and the sauce tastes like onions instead of punishment. Das braucht seine Zeit. Twenty minutes is not decoration here. It's the work.

I use the fat already in the pan when there is some, because Weggeworfen wird nichts. The browned meat juices become the backbone, stock loosens them, and cream rounds the edge without turning the sauce into soup. Nicht aus dem Glas. A jar gives you salt, starch, and the memory of onion. This gives you the pan.