Botanical name: Oxalis tuberosa
Oxalis tuberosa is a herbaceous perennial native to the Andean area of South America.
Locals use leaves and shoots as vegetable, given their pleasant acidulous taste, in addition to crispy roots. The collection of roots of OCA, pungent and sour potatoes, is one of the most important Andean Highlands, second only to that of the potato. The tubers of Oxalis are generally eaten cooked or fried, as an addition to soups, as a garnish to dishes or as a dessert.
The plant is also known as the "goose", a term which is commonly referred to as the tuber.