I am writing specifically about the Comesum Food Plaza at Nizammuddin Railway station, Delhi. It is a great place to hang out and have a bite specially late night or early morning. You get good quality food at reasonable prices at any time of the day.
But the real charm of the place is after midnight. All of Delhi converges on it. It looks more like a college joint at the time than a railway station food plaza. Its got great north Indian food apart from a whole lot of choices. There’s another one at Delhi railway station but I would suggest to give it a miss.