I have a female friend at NIT Patna and from what I heard from here, the food served in the mess is satisfactory. Students are offered a variety of dishes but the food tastes decent.
Breakfast is the best meal with a different dish served every day. Some days it's Chole Batoore, while on other days it's Poha or Aaloo Paratha. Students are also given milk, a boiled egg, and an omelet for breakfast occasionally.
Lunch and dinner mainly comprise dal, roti, vegetables, salads, pickle, kheer, and Suzi ka halwa. The type of vegetable and dal vary everyday. I am also attaching a few pics of the lunch she ate during her time at NIT Patna.
In the evening students are given snacks such as tea and biscuits. Weekends bring in specialties like fish and chicken.