Green Flash Grand Cru Ale Dark Ale with Belgian and American Yeasts Grand Cru: Mysterious, dark, bottle-conditioned ale brewed with rich malts and fermented with Belgian and American yeasts. Grand Cru was available for the first time, November 15, 2008 at the 6th Anniversary Beer Festival. It will be available for general release on December 1st. Be one of the fist lucky people to try this special Belgian-inspired ale. Cheers!