Wine of the Day, No. 343 & 344

Tupungato is the northern-most area of the Uco Valley, itself a sub-region of Argentina's well-known Mendoza appellation. Vineyards here, lying in the foothills of the immense Tupungato volcano, average 4,200 feet above sea-level. Located in the volcano's rain shadow, this grape-growing area is arid and chilly, especially at night, when the diurnal swin…