The Cornerstone of Cabernet

Mike Dragutsky and David Sloas, two doctors from Memphis, launched Cornerstone Cellars in 1991, when Sloas was visiting

winemaker Randy Dunn on Howell Mountain and Dunn offered to sell him 4.8 tons of cabernet sauvignon grapes, a gesture that falls into the "can't refuse" category, even after a sanity check. Seventeen years later, Cornerstone turns out …