 The in @-@ flight food is <unk> by <unk> Air <unk> , another joint venture between Tata and a Singaporean company , headed by <unk> <unk> <unk> , formerly the executive chef of the Taj Hotels group . Vistara offers four different meals for each cabin for different time of the day — breakfast , <unk> , lunch and dinner with options of one vegetarian and one non @-@ vegetarian dish in economy class ; two vegetarian dishes and one non @-@ vegetarian dish in premium economy ; and two vegetarian and two non @-@ vegetarian dishes for business @-@ class cabin . The menu is typically changed every seventh day and there are different menus for lunch and dinner . It also provides special meals upon request 24 hours before departure . 
