Bhetki, a type of Barramundi, is very popular in Bengal (Maach just means fish). Paturi refers to dishes steamed in banana/plantain leaf parcels. This sort of preparation is very common in eastern India (and probably elsewhere in India too) just as it is in other parts of East Asia. Oh Calcutta’s version is not bad but they only steam the fish with a piquant mustard paste which makes it kind of one-dimensional. Just a day before we’d had the version made by one of my aunts (an incredible cook) and her version which includes shredded coconut caused this one to pale in close proximity/comparison.