breakfast - 2 bread slices with a coat of butter and 2 pieces of veg cutlet or omlette costs 35 inr initially, and after 2 hours 30 inr :D
lunch, dinner - veg meals / nv meals. veg meals costs 100 inr. rice, sabji, dhal, pickle, mineral water - 200 ml, panner-matar masala and 2 pieces of roti for lunch and 2 pieces of rumali roti for dinner.
unlike vivek express (dibru to kanya) few local vendors enter 2 ac compartments.
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piece idli with chutney available from local vendors who enter coach in durgapur is also fine.
you can buy poori (6 pieces) and hot alu masala for 30 inr from local vendors in cuttack platform. idli also available.
briyani lovers dont miss mutton briyani from dindigul thalappakati restaurant in central station. inform them your urgency - i got my parcel in less than 2 minutes.
veg lovers try the various types of rice in saravana bhavan. but their service time would raise your blood pressure.
after crossing chennai you will get samosa/singada in train. each piece costs 10 inr. in jolarpettai you will get hot hot ulunda (urad dal) vada from local vendors. costs 10 inr per piece.
throughout travel hot tomato soup is available between or after food timings. costs 20 inr per cup.