BY midafternoon on a recent Saturday, Bierkraft, the beer emporium and grocery on Fifth Avenue in Park Slope, Brooklyn, was half-filled with customers, many of them parents with babies or toddlers in tow. They were browsing the more than 1,000 varieties of bottled beer or surveying the listing of selections available on the 13 taps and 3 cask lines. Some carried a good-sized satchel.
Diaper bag? Gym clothes?
No. It was a tote for their growlers.
