FOOD RESOURCE COLLEGE OF HEALTH AND HUMAN SCIENCES, OREGON STATE UNIVERSITY

OCA

Ward, Artemas. 1923. The Encyclopedia of Food. New York, Number Fifty, Union Square.

Oca is a tuber looks like a stubby wrinkled carrot. Most varieties have a slightly acid taste, leading to their description as"potatoes that don't need sour cream." It is sold as a New Zealand yam.