A traditional food native to the Andes region of South America, these Oca were re-introduced by Dr. Alan Kapuler, PhD, public domain plant breeder, of Peace Seeds in Corvallis. Beautiful brightly colored tubers ranging from sweet to tangy, tuberizing after equinox, harvested late fall, after frost. Round to cylindrical tubers 1–6″ long. Sprawling succulent stems to about 1′ tall with clover-like leaves, yellow flowers. The tubers have a variety of flavors from crisp and lemony fresh to buttery and sweet when cooked. Grow similar to potatoes. Traditionally the tubers are exposed to sun and cold for several days after harvest to increase sweetness.