1) Nirulas fruit sundae and mahaburger. You have them and you will feel so satisfied that you will like to have them again and again. They are just awesome.
2) Chat at Chat chowk(in Galleria, Gurgaon). they make very good chats. though offlate, I have left that the oil they use seems to be a cheaper oil as it stings.
3) Baskin robins ice cream
4) Haldiram cholae bhatura and purani dilly ke chole chawal
5) Gola sizzlers ke sizzlers(all of them are just awesome)
6) Pind balluchi ke Dhai ke kabab
7) Bikaner wala ki laasi
8) Aloo pyaaz ke parantha
9) and 10) - dont want to add anything unnecessarily, as I have only 8 food items to recommend