Wash slab of ribs and take off excess fat. Cut the ribs in pieces, one or two bones, and sprinkle with salt and pepper. Place on a large pan covered with parchment paper. Bake in oven at 350 degrees for 15-20 minutes until lightly brown. Pat excess grease off ribs. In a large pot, put in tomato paste and tomato juice. Add salt and pepper, and cut green beans. Cook about 30 minutes, then put the ribs in the pot with the green beans, add large pieces of onion and enough water to cover. Cook about one hour, add Irish potatoes and cook an additional 30 minutes. Serves 6.