Shorshe or mustard, is a quintessential ingredient in bengali cuisine, it is used both in 'aamish' and 'niraamish' or veg and non-veg preparations preparations. Now the 'maacher shorshe' is quite a commonly prepared dish, whether made with hilsa, or carp, or even fishes like pabda and parshe. This is a different take on the simple mustard fish.