IRCTC supplies food that is loaded from stations on the way. Breakfast - bread 3 slices with double egg omlette - 40INR. Lunch and dinner rice with veg / non veg - veg lunch has rice (qty is less), dhall, subji, pickle, spoon and disposable plate - costs 60. Better to depend upon local food available in platform - you can enjoy varieties economically. Biriyani is available in almost all stations , anytime.