Highland barley wine and butter tea are the traditional foods of which nation? In fact, highland barley wine and butter tea are both traditional foods of Tibetans in China. Highland barley wine is an alcoholic beverage made from highland barley by fermentation. It has a low alcohol content and won't go to the head, so it is deeply loved by local people. Buttered tea is a drink made of butter and strong tea, which is very troublesome to make. Tea bricks need to be boiled into strong tea and then filtered, then boiled water and salt are added to the tea, and butter is stirred with special equipment. Although it is more complicated to make, it tastes better.