Shred cabbage. Place in strainer and wash under running water for several minutes; drain well. Wash tomatoes and cut into wedges. Wash and scrape carrots. Grate. Place carrots in center of a platter; surround with ring of cabbage and then with ring of tomatoes, or put tomatoes in the center and lay the carrots around them. Sprinkle with salt. Before serving, add a dressing of oil and vinegar or oil and lemon.
