Cut chuck into 1" cubes. Saute onions and garlic in heated shortening or oil in a large kettle until tender. Stir in paprika; cook 1 minute. Wipe beef cubes until dry. Brown cubes, several at a time, on all sides. Add tomatoes, caraway seeds, marjoram, lemon peel, water, salt, and pepper. Bring to a boil. Lower heat and cook slowly, covered, 45 minutes. Add potatoes and continue to cook about 20 minutes longer, until potatoes are tender. Serves 10.