It was William Faulkner, the great American author, who said, “Pouring out liquor is like burning books.” At Lo Pinyol in Barcelona, customers are encouraged to drink the liquor and read the books. The traditional wine bar and library specializes in Spanish vermouth alongside a selection of drinks from local Catalan producers. In 2013 longtime friends Carels Poy and Pau Raga teamed up to restore the bar, which had been operating since 1934. Hoping to preserve history and a disappearing kind of venue—Barcelona’s old neighborhood restaurants and bodegas—the new owners…