When Napa Valley's PlumpJack Winery moved to screwcaps in 2000, owner Gordon Getty kept half of production in natural cork, largely to appease traditionalists.

FORBES: What Holds the Juice Can Be What Sells It

Amorim's "Save Miguel" ad campaign, fronted by comic Rob Schneider, defends natural cork by educating consumers about the value of maintaining cork forests through replanting.

WSJ: Cork's Popping Potential