Mozart Café offers generous portions. I ordered a cup of soup and thought the waitress had erred when she brought what looked like a bowl. No, she explained, this was the cup; the bowl was huge.
The restaurant doesn't take reservations, which was a shame for the people who accumulated at the entrance and outside the front door as the evening went on. It's not pretentious: don't expect tablecloths, let alone candles. But there is a very good selection of kosher food (just no meat), including sushi. The prices are reasonable.