1. First, select top-grade highland barley with full grains and luster, wash it, and soak it in clear water for one night.
2. Put it in a large pot and add water for two hours, then take out the cooked highland barley, dry the water, grind the fermented distiller's yeast into powder, spread it evenly and stir.
3. Put it into a jar and seal it. If the temperature is high, you can take it out for a day or two.
Buttered tea is a drink for Tibetans. It is usually eaten with Bazin as a staple food. This drink is made of ghee and strong tea. First, put a proper amount of ghee into a special bucket, add salt, then pour in the boiled strong tea juice, and beat it repeatedly with a wooden handle to make the ghee and tea juice dissolve into a whole and become milky white. Some ethnic groups adjacent to Tibetans also have the habit of drinking butter tea.