Why do few people drink barley wine inland?

Little people drink barley wine inland mainly because of the difference in taste, especially the South does not like barley wine this flavor, so it can not be unified, specific or need to look at personal preferences.

Barley wine is made from barley, a major grain produced on the Tibetan plateau. It is the favorite drink of the Tibetan people, and is essential for festivals, marriages, births, and welcoming friends and relatives.

Characteristics of barley wine:

The composition of barley wine is different from white wine, the unique components are mainly β-glucan (average content of 6.25%), produced in the Tibetan plateau region of the barley's β-glucan content is even higher, up to 6.5% or more, the nutritional value of barley wine, but also includes tocopherols and flavonoids.

The gradual improvement of barley wine brewing process, in fact, from the Ming and Qing dynasties. Since the Ming Dynasty, with the Qinghai-Tibetan region and the central civilization of the increasingly close links, Huangzhong County, Qinghai Province, Mutual Assistance County, Ping'an County, Guide County and other agricultural areas of Qinghai Province, has become the main area of cultural exchanges between China and Tibet, the brewing process of barley wine with the deepening of economic and cultural exchanges has been a significant development.

Reference:

Baidu Encyclopedia - Barley Wine

People's Daily Online - Mutual barley wine's six uniqueness