The Fish Chop is a Kolkata snack: a breaded fish ball or patty, fried crisp, eaten cold or at room temperature with a sharp condiment alongside. It is not a sandwich in the bread-around-filling sense; it is the croquette-shaped end of Bengal's deep love of fried fish, and it sits in the catalog as a building block more than a finished sandwich. The chop in the name refers to the form, a shaped, crumb-coated fritter, and the fish is the variant that earns its place on a tea-stall counter next to potato and beet versions.
The build is layered from the inside out, and each layer has a job. The core is cooked fish, flaked and bound with mashed potato and spice so it holds a shape without being pasty. That mixture is rolled into a ball or pressed into a flat patty, then run through a standard breading sequence: a flour or batter coat, then a press into breadcrumbs heavy enough to shatter when fried. It goes into hot oil until the crust is deep golden and the inside is just heated through. Good execution is a thin, even crust that crackles and a center that is moist and clearly fish, seasoned but not muddied by too much potato. Sloppy execution shows up three ways: a greasy crust from oil that was not hot enough, a dry interior from fish that was overcooked before it was even shaped, or a filler-heavy core where potato has crowded the fish out entirely.
As a component, the Fish Chop is what makes a fish sandwich in Kolkata: slipped between bread or a roll with raw onion and chutney, the same patty becomes a portable meal. On its own it is served with a smear of kasundi, Bengal's pungent fermented mustard, or a squeeze of lime and a few onion rings. The closely related Bengali fish fry, a flatter cutlet built on the same logic but treated as its own dish, deserves its own article rather than being crowded in here. Within the chop family the fish version is the prestige one; the vegetable chops are everyday, but the fish chop is what a stall is judged on.