Highland barley wine and butter tea are the traditional foods of which nation?

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