This hole in the wall ('Yebche Gartse Suertob' in Tibetan) is a good place to get an authentic vegetarian lunch. There's no English menu, so consider going with your Tibetan guide. The combo dishes with rice are good value and the Tibetan-style fried mushrooms (臧式炒蘑菇, zāngshì chǎomógu) and dry hotpot (干锅, gānguō) dishes are particularly recommended.
Father Vegetarian Restaurant
Lhasa