The 6th annual World Beer Festival returned to the Columbia Convention Center on Jan. 18 with pools of beer, dudes in lederhosen and thousands of pretzel necklaces. Tasters of all kinds (from the seasoned beer snob to the college student with a pallet accustomed to Natural Light) perused taps from dozens of breweries, filled complimentary tasting glasses with generous samples of over 150 craft flavors and fought through 5 p.m. hangovers.