Ahead of the Great American Beer Festival in Denver, we asked beer writers from across the country to offer lists of can’t-miss breweries in each region showcased at the festival — and add a few wild cards they want to check out. This is our sixth of eight previews. Cyrus McCrimmon, The Denver PostJohn Frank covers craft beer for The Denver Post and previously wrote a craft beer column in North Carolina.John Frank helms the craft beer ship at The Denver Post and in an earlier life he wrote a weekly craft beer column for the News & Observer in Raleigh, N.C.