Peel and chop the onion. Wash, quarter, core and cut apples into pieces. Squeeze 3 oranges. Heat 2 tablespoons of oil in a saucepan, fry the onion in it until transparent, tear up the sauerkraut and add.
Add juniper berries, vinegar and the orange juice, let it braise for about 20 minutes. After half the cooking time add apple pieces. Season to taste with salt and sugar. In the meantime, peel the remaining oranges and cut them into slices.
Wash the meat and dab dry. Heat the remaining oil in a pan and fry the chicken fillets on each side for about 7 minutes. Season with salt and pepper. Remove the fillets from the pan. Toss the orange slices briefly in the hot dripping.
Slide onto a plate and place the sauerkraut on top. Cut the chicken fillets into slices and arrange them on top. Garnish with lemon balm.