This is an interesting plant which is known as "papa de aire" around here. Actually, it's a type of yam. The plant is a vine and the "potatoes" form on the vine, in the air. One was given to us as a gift and I planted it near our house. I gave the first harvest away to the workers, they had never seen the unusual shaped vegetable before. There are still a few left on the vine which I will eventually eat. According to the internet they have many medicinal properties but need to be cut and soaked for several hours prior to cooking.