By | February 28 2013 5:00 PM

A winery in Napa Valley is taking an unconventional approach to an age-old tradition that dates back to before medieval times. In an effort to experiment with the wine-aging process, Mira Winery in Saint Helena, Calif., has submerged four cases of their 2009 cabernet sauvignon in South Carolina's Charleston Harbor to see how the ocean affects the wine.