Look for the acorn
via corkforest.org
Sometimes it can be tough figuring out which wines have a real cork (which help the environment due to their sustainable nature) and which wines have plastic synthetic corks or screwcaps. The Cork Forest Conservation Alliance (http://www.corkforest.org) has a program called "Look for the Acorn" that helps to solve this dilemma. A number of wineries are adopting this "acorn" logo and placing it on their wines, allowing consumers to choose wines that use real cork.