Clean the kale and pluck the leaves into small pieces, wash, then cut into small pieces. Place in a large bowl, season with salt and mix with 6 tablespoons of oil. Let it steep for about 1 hour. Roast the walnuts without oil until they are fragrant. Halve the olives, drain the tomatoes, cut into pieces.
For the sauce, mix sour cream with oil and vinegar and season with salt, sugar and pepper. Mix the salad with walnuts, olives and tomato pieces and arrange on plates. Put the dressing on the salad. Spread the pink pepper on the salad together with the rest of the walnuts.