Remove the outer leaves from the cabbage. Cut cabbage into quarters, cut out the stalk. Cut cabbage into strips and cook in boiling salted water for 20-25 minutes. Wash apples thoroughly, quarter them and remove seeds.
Cut into cubes and sprinkle with lemon juice. Peel, wash and roughly grate the horseradish. Steam apple cubes and horseradish in a tablespoon of hot oil for about 5 minutes. Stir in sour cream, season with salt and pepper.
Let the sauce cool. Wash the escalopes, dab dry and fry in the remaining oil for 3-4 minutes on each side until golden brown. Season with salt and pepper. Drain the cabbage and let it drain well. Melt butter and toss cabbage in it.
Arrange one cutlet each with cabbage and sauce on a plate.