Oca, also known as Peruvian tuber, is a member of the wood sorrel family, and is native to the Andes Mountains. Oca grows at 13,000 ft. elevation, where the consistently mild, cool, humid climate is perfectly suited to the potato-like vegetable. The Chefs Garden is a world away from Peru. Our state sits a mere 548 feet above sea level, and Ohio weather is anything but consistent as temperatures dip below zero in winter, and climb into the 90s in summer. And yet, on a 12 degree January day, when our fields are covered in ice and snow, we are doing the impossible.