Herds of yaks graze in a village that overlooks Lhasa, capital of Tibet Autonomous Region in southwest China. Every day, more than 200 kg of yak milk produced here is sent to a bar near the Potala Palace to be fermented into yogurt.

Lhasa celebrated the Shoton Festival last week. Shoton means "feasting on yogurt" in the Tibetan language. As more and more tourists have come to know the festival, having a bowl of yogurt while taking a selfie in the most popular yogurt bar in Tibet has become the latest trend.

Stepping into the bar, one can easily feel "overwhelmed" by the many boarding passes, train tickets, postcards and snapshots left by its customers that have been stuck to the walls, the ceilings and under the glass tabletops.

Kelsang, the bar owner, said over 1,000 bowls of yogurt were sold every day during the Shoton Festival.

Kelsang was born into a noble family of a prestigious branch of Tibetan Buddhism in Xigaze and raised as a "princess." In 2007, the 19-year-old "princess" was sent to pay homage to sacred temples in Lhasa on behalf of her family. After the pilgrimage, instead of coming back to inherit her family's Tibetan incense business, she decided to stay.

Soon she came across two tourists from Shanghai and Shenzhen, who loved Tibet so much that they wanted to open a small business in Lhasa. After some brief discussion, the two agreed to invest money in a yogurt bar with Kelsang in charge of the operation.