Cut the meat and roots into fine strips, finely chop the onion, fry everything quickly on all sides in hot fat. Pour in the broth, season with salt, pepper and cook covered until soft.

In between, whisk the flour with the sour cream and, when the meat is soft, add.

Finely chop the cucumber and stir into the sauce together with the capers. Top off with lemon zest and sugar. Nockerln or spaetzle are suitable as a side dish, but basically to taste.