In the highlands of the Peruvian Andes, a unique wine called Oxalis is produced from the yellow oca tuber, a traditional staple of the Peruvian diet. Developed by an agricultural engineer, this wine has found its way to some of Lima's finest restaurants, including Central and Maido. The production of Oxalis involves leaving the ocas in the sun for 30 days to increase sugar content and decrease acidity, followed by pressing and fermentation. This innovative wine, inspired by ancient Inca techniques, is celebrated for its originality and link to the country's heritage.