In places like delhi, we the bongs do not get the desired authentic bengali food I have tried CR Park small restaurants but the ultimate bengali cuisine destination is Oh! Calcutta. It has every bengali dish that you can think of. I went there on my anniversary and I loved what I ordered. It included Mochar Ghonto with the bengali flavored ghee, it was yummy, lucchi, bhapa ilish with hot steam rice, Channa Dal, Butter Naan, Chingri Malai Curry. My Bill was close to Rs 3000/- and it was worth it. The waiters do speak in bengali which added to the environment. I would recommend this to all my bengali friends and to those who love bengali food.