Everything at Eternity is vegan and I always emerge from here feeling full. I usually get the hot food selections for the day -- you get one main dish and two sides. The "cheese"-topped casseroles are usually pretty good comfort food, as is the macaroni and "cheese." The options for sides change frequently -- I find I can't go wrong with collard greens and sweet potatoes. The curry broccoli salad is incredible -- I sometimes buy a small tub to take to work the next day.
There's a good sandwich selection, but if you're in a pinch for time, you might be better off getting a hot bar or cold salad selection. That having been said, the protein roast gyro is excellent (I hope you like garlic) and probably my favorite sandwich, though I also like the tofu fillet very much. I do think the fries are a little overcooked sometimes. If you can, I strongly recommend getting a side salad (like the curry broccoli) with a sandwich.
Eternity sometimes offers packaged desserts, like individual blueberry cheesecakes or once they had some vegan donuts, but the dessert really worth trying is the vegan soft-serve ice cream, which is made in the store. (Sometimes the soft serve machine isn't cooperating.) There are also fruit smoothies and one very yummy smoothie (the name of which eludes me) made with spirulina and soft-serve ice cream. It's a little green but wonderfully vanilla-y and creamy.
There's not really much atmosphere here -- when the weather's nice, I like to sit on the patio. Eternity is located on a pleasant little strip in the Central West End. Inside, near the front window, there are free vegan materials, like brochures and stickers, available.
Food at all-vegan places usually does cost more, so I'm okay with the prices. The service can be slow -- which can be hard if you're eating on a lunch break from work -- and sometimes I get really sad when I find out there's no ice cream that day, but there's always something good to be enjoyed.