There are only a few places in the DC area to sample Nepaese cusine, and even those places survive serving mostly a greatest hits list of easily identifiable Indian-Amerian classics.
Namaste has a tiny Nepalese section to the menu. I came here for the momo and also ordered the badam sadeko and a kasmiri (not nepalese) naan with fruits and nuts.
While waiting about 25 minutes for the mono, I munched on the badam sadeko, a dish of mostly peanuts with cilantro, tomato, marinated onion, and spices. The spices were a bit tame, so this dish was mostly eating a bunch of wet peanuts and was only somewhat satisfying. The kasmiri naan, was sweet enough to be a dessert, with its layer of nuts, dried fruit, and sugary spread in the middle. Hard to imagine this being a satisfying pair with much of the menu.
Then came the chicken mono. The filling is very dense, like little chicken golfballs wrapped in dough. Pleasant enough, but I've had better.
I talked to a young Nepalese couple who are used to making their own momo, but didn't feel like cooking that night. They enjoyed the momo, though it wasn't as good as their own. It was their third time here but first attempt at the dumplings. They like this place better than the nearby Momo's where we had a Chowhound dinner a few months back, but I disagree. This is a 'nicer' place but with a more limited Nepalese profile.