When is this facility available?
According to the rules of IRCTC, free miles are provided to the passengers. But it is not that if the train is late by 30 minutes then you will get the meal facility. Under the catering policy, if the train is late by two hours or more, then this facility is given to the passengers of express trains that include Shatabdi, Rajdhani, and Duronto.
These facilities are provided by IRCTC
According to their policy, tea or coffee and two biscuits are given in the breakfast, tea or coffee in the evening snack and four bread slices (brown/white), one butter chipotle is given. Rice, lentils, and pickle packets are given to passengers by IRCTC for lunch or dinner, or 7 pooris, mix veg/aloo bhaji, a packet of pickle, and one packet each of salt and pepper is given.