I've tried (and love) Vegetate and Sunflower, but was wondering if there any other great vegetarian restaurants in the area. I have vegan friend from out of town and I want to take her to all the best spots.
Soul Veg! I bring all of my out of town friends to Soul Veg on Georgia Avenue up by Howard University. Good soul food and Caribbean veggie food joint. Also, Tropicana has some tasty Jamaican vegetarian options.
Soul Vegetarian Cafe and Exodus
2606 Georgia Ave NW, Washington, DC 20001
7812 Georgia Ave NW, Washington, DC 20012
Not completely vegetarian but Heritage in Dupont Circle has lots of veggie options, as well as most Ethiopian restaurants.
And I hear great things about Sticky Fingers the vegan bakery. Also the new Hello Cupcake makes a vegan cupcake selection each day.
Java Green is vegan (I believe vegan Woody Harrelson ate there once when filming something in DC) and good, korean-ish.
Sticky Fingers is great for baked stuff, wonderful cake, I don't know how their sandwiches etc are.
Asylum's vegan brunch (and not just brunch) is worth checking out, and a fun slice of DC, not necessarily the greatest food.
Java Green Cafe
1020 19th Street N W, Washington, DC
Sticky Fingers Bakery
1370 Park Rd NW, Washington, DC
2471 18th St NW, Washington, DC
Go up 355 (Rockville Pike) north of the Beltway to Vegetable Garden. It's on the left side of the Pike as you go north, just north of Marinelli St. In my opinion, they are MUCH better than Yuan Fu, which is also on the Pike but further north. They are very vegan-friendly.
If your friend likes Indian food, Udupi Palace at New Hampshire Avenue and University Boulevard in Langley Park is top notch Southern Indian vegetarian. The vegetable samosas and spinach and mushroom dosai are to die for. Don't let the location in a nondescript shopping center discourage you. The shopping center itself is very secure, but don't expect to feel comfortable taking a long after-dinner stroll through this neighborhood.