The Quebrada de Humahuaca is located at the centre of Jujuy province, near to the northern border of Argentina. The Rio Grande cuts across this dry, vividly colored landscape at altitudes varying from 1,800-3,800 meters above sea level. The presidium has identified five varieties that are farmed at an altitude ranging from 2,100 to 3,800 meters: the Papa Azul is the sweetest potato in the group, cylindrical in shape with dark blue skin with white flecks and yellow flesh; the Papa Señorita, which is irregular in shape, has white skin streaked with pink and yellowish flesh; the Cuarentilla, pink skin and white flesh; the Tuni Morada is round and flat, dark skinned with white flesh perfect for mashing and the Chacarera, with blunted ends, white skin and white flesh, is perfect for frying. This latter variety has the added curiosity that it develops violet streaks if cultivated above 3,000 meters.
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