Himalayan Yak was one of the first restaurants in the area serving Nepali and Tibetan fare, in a neighborhood now full of them on most blocks. The restaurant is definitely a mainstay, despite not being on top of most people's lists. The interior is cozy and the place is very well-run, with staff attentive and friendly in their matching orange shirts.
I have tried the Nepali and Tibetan fare here years ago and was pleased enough, but returned due to a recent fascination with ema datse ($9.95, below), the national dish of Bhutan, which is offered here. After tasting it at nearby Wasabi Point, I could not get enough.
The version here is not as complex but comes fiery hot and accompanied by white rice. The belly churns for a good time after eating it, and I noticed the staff was sneaking glances at me to see if I could handle the heat. Luckily I did not lose face and was able to finish it all.
On a side note, the restaurant has a very fast wifi network and decent bottled beer selection for working during afternoons. I pulled up a seat at the very comfortable bar and settled in for some writing and a couple Carlsbergs after my meal was over.