Cetewayo, or Zulu, Potatoes
The Cetewayo, or Zulu, potato, a wild variety of Solanum tuberosum found in Africa, is sometimes grown as a garden vegetable for its flavor and novelty. It has practically the same percentage composition as the ordinary potato. When cooked, the flesh is purple in color, but when brought in contact with vinegar, as in salads, it turns red.—(F. B. 295.)