What does it mean to buy you a glass of barley wine

Toast to you means to drink a glass of wine. Toast you to show respect, polite, say this sentence is several people around the door to drink together, chatting, when the words. Barley wine, called "Qiang" in Tibetan, is a major grain produced on the Tibetan Plateau - barley, made of fragrant and mellow, sweet and refreshing, after drinking headache, thirst unique style. Belongs to the practice of clear liquor floor tank.