«International Wine Challenge» In its 36th year, the IWC is accepted as the world’s most rigorous, impartial and influential wine competition. The IWC assesses every wine ‘blind’ and judges each for its faithfulness to style, region and vintage. Each medal-winning wine is tasted on at least three separate occasions by a minimum of 12 different judges including Masters of Wine. Awards include medals (Gold, Silver, Bronze) and Commended awards. The IWC is committed to helping consumers discover great wine, and the medals displayed on winning bottles offer a trusted guarantee of quality. The IWC is committed to helping consumers discover great wine, and the medals displayed on winning bottles and in winning shops offer a trusted guarantee of quality.