Tongba

Tongba is a millet-based alcoholic beverage found in the eastern mountainous region of Nepal and neighbouring Indian regions of Sikkim and Darjeeling. It is a sign of respect to a guest, and the drink is also an important element of special occasions and festivals. It is the traditional and indigenous drink of the Limbu people. Tongba is actually the name of the vessel that holds the fermented millet beverage known as mandokpenaa thee. Tongba is prepared from brown finger millet (Eleusine coracana, also known as ragi in India or kodo in Nepal) grown in hilly regions, and it is cooked and combined with traditionally cultured khesung, which is a microbial colony or starter culture. 'Khesung' is the Limbu version of the Nepali term 'murcha'; the Lepchas call it 'thamik', and Bhutias refer to it as 'phab'.

Source: Wikipedia