Locals in Sylhet don't even use the standard word 'shutki' for it everywhere — depending on the sub-region it's called hutki, hukoin, futki, or fukoin, one of several ways the region's own dialect quietly rewrites standard Bengali.
Dried, fermented fish is simmered with vegetables, chili, and garlic into a sharply pungent curry that pairs with plain rice. In Sylhet it goes by its own local name, hutki, and shows up in home kitchens and small eateries throughout the division.