Pegah Y.
Yelp
I'm not really sure why this place is classified as a FroYo place. Though I think they sell FroYo here, it's primarily a salad shop. I've visited Sweetgreen (in Dupont Circle) twice in one week with a friend (we were both so enthused by it) and thought it's a pretty cool concept. This restaurant chain competes with Cosi, Chop't, and quite a few other similar shops which cater to the health-crazed DC "workaholic" population. I still prefer Cosi and Chop't (since they have more "savory" salads, while Sweetgreen has sweeter salad options), but Sweetgreen can certainly hold its own among DC salad shops.
Both times I visited, I ordered the Kale Caesar salad, which came with kale + chopped romaine, roasted chicken, parmesan cheese, grape tomatoes, parmesan crisp, caesar dressing, fresh lime squeeze. It had a sour-tangy taste to it and it was quite delicious. The servers are generous with the chicken, though do note that if you ask for more chicken, they will charge you (and they won't necessarily tell you before they give you more chicken).
I would certainly visit Sweetgreen again, but since I prefer more "savory" (rather than sweet) salads, I feel that the Kale Caesar is likely the only salad I would enjoy from here.