Peel the beetroot (it is best to put on rubber gloves) and cut into thin slices with a kitchen slicer. Heat the oil to approx. 170 °C. Fry beetroot slices in portions for 3-6 minutes.
Remove the chips and let them drip off on kitchen paper. Season with salt and pepper. Wash the meat, dab dry and season with salt. Heat 2 tablespoons of oil in a frying pan. Fry the meat for 4-6 minutes while turning.
Remove and leave to rest in a warm place. For the sour cream, wash the chives, shake dry and cut into small rolls. Mix crème fraîche, quark, chives, vinegar and sugar.
Season with salt and pepper. Season steaks with pepper and arrange on plates with chips and sour cream.