Mutton is cut into strips. Onion peel and cut into small cubes. Green part of green onions chop rings. Cut cherry tomatoes into slices. Blanch the green beans, cool, cut into slices. Mix with the meat. For the filling pass garlic through a press, mix with oil, mustard, lemon juice, salt and pepper, add the yogurt, blender. Season to taste. Add horseradish and chopped greens. Mix all the ingredients, let stand in the refrigerator. Serve sprinkled with greens, cherry tomatoes and lemon slices.