Rarely packed, even on Saturday night, because it's in the infrequently visited center of town, Oh! Calcutta serves the city's best Bengali food in an upscale surroundings of dark-wood set off by simple black-and-white archival photos from the British Raj. The seafood is exquisite, and if it's all too unfamiliar, defer to the waiters—some of the best in the city—to choose something, based on your specifications. Start with roshun bhapa maach, a steamed bekti
(a freshwater fish) marinated with kashundi (Bengali-style mustard), green chilli paste, and garlic. For a main course, you can't go wrong with the aam kashundi kakra (breaded and stir-fried crabmeat in an orange-mango mustard sauce).
Rosewood Hotel, Tulsi Wadi La., near Tardeo A/C Market, Mumbai, Maharashtra, 400034, India