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Yak Milk

Rare

Tibetan Plateau, Himalayas, and neighboring high-altitude regions of Central Asia

A rich, concentrated milk produced by yaks in high-altitude regions of Asia and used traditionally by herding communities.

About Yak Milk

Yak milk is produced by the domestic yak (Bos grunniens), a large bovine animal native to the Himalayan region of South Asia and the Tibetan Plateau. Yaks are herded at altitudes typically ranging from 3,000 to over 5,000 metres above sea level, in some of the harshest and most remote pastoral environments in the world. For the communities of Tibet, Bhutan, Nepal, Mongolia, Kyrgyzstan, and neighbouring highland regions, yaks are a central source of food, transport, fibre, and fuel.

Yak milk is notably richer than cow milk. Its higher fat content — ranging from 5.5% to over 9% depending on the season, lactation stage, and pasture quality — gives it a creamier, fuller flavour. The milk has a slightly sweet taste and a white to pale cream colour. Yaks produce considerably less milk than modern dairy cattle, typically yielding between 1 and 5 litres per day during the milking season, which makes yak milk and its products relatively precious commodities in the regions where they are produced.

Yak milk has been a dietary staple in Tibetan culture for centuries. It is consumed fresh and converted into butter, cheese (chhurpi in Nepal and Tibet), and fermented beverages. Yak butter tea (po cha), made by churning strong tea with yak butter and salt, is a culturally significant drink in Tibet and surrounding highland regions, providing warmth and calories in cold, high-altitude environments.

Sources & Further Reading

PMC — Chemical Composition of Chinese Yak Milk — Fat, protein, lactose, ash and total solids comparison: yak vs cow milk
PMC — Yak Milk: Nutritional Value and Functional Activity — Comprehensive review of yak milk nutrition and applications

Nutrition

Yak milk is considerably richer than cow milk in fat and protein. Values vary significantly by season, lactation stage, and region. Typical ranges reported in research:

Fat5.5–9%

Protein4.0–5.9%

Lactose4.0–5.9%

Total SolidsHigher than cow milk

The high fat content makes yak milk an excellent source of energy, which is particularly important for communities living and working at high altitude in cold climates. Yak butter made from this rich milk is dense in calories and fat-soluble vitamins.

Common Uses

◌ Drinking fresh ◌ Butter tea ◌ Butter (Mar) ◌ Cheese (Chhurpi) ◌ Fermented milk ◌ Dried cheese

In Tibet and surrounding regions, yak butter (known as mar) is the primary fat used in cooking and is a key ingredient in po cha (butter tea). Chhurpi, a traditional hard yak cheese made in Nepal and Tibet, is produced in both soft and extremely hard varieties — the hardest form is chewed slowly over many hours and is sometimes called the hardest cheese in the world. Fermented yak milk drinks are also produced and consumed locally.

Interesting Facts

Yaks can survive at altitudes above 5,000 metres where most other livestock cannot survive due to low oxygen levels and extreme cold.
Yak milk contains significantly more fat than cow milk, making it one of the richest animal milks produced at scale by pastoral communities.
Po cha (Tibetan butter tea) is made by churning strong tea with yak butter and salt — it is consumed in large quantities daily as a high-calorie warming drink in cold high-altitude conditions.
The domestic yak (Bos grunniens) is descended from the wild yak (Bos mutus), which is now an endangered species found in small numbers on the Tibetan Plateau.
Chhurpi, the hard yak cheese of Nepal and Tibet, is so dense it can be chewed for hours without dissolving, and is sometimes marketed internationally as a long-lasting dog chew.