This bright restaurant offers Amdo-style food, namely steamed yak-meat momos. And there's Lhasa Beer to wash them down with. Watch the chefs at work inside a glassed-in kitchen at the entrance. The picture menu (no English) is on the wall above. Point out what you want, pay at the counter and choose any table.
Despite having the same name as Tashi Choeta Hotel and being located right next door, the two are apparently unaffiliated.