The Paneer Kathi Roll is Kolkata's vegetarian answer to its defining wrap: a flaky paratha rolled tight around grilled spiced paneer, dressed with raw onion, green chutney, and lemon, built so a non-meat eater gets the same handheld, one-fisted street roll as everyone else. It sits squarely in the kathi tradition, a rich layered flatbread against a hot, sharp, juicy interior, with acid and raw onion keeping it from going heavy. A good one is judged on whether the paratha holds the cylinder and whether every bite carries bread, charred paneer, onion, and tang in the same stripe rather than in separate zones.
The build runs in a fixed order and the order is the recipe. A paratha is cooked on a hot griddle in fat until it is brown-spotted, flake-edged, and still supple enough to roll without cracking. Paneer is cut into batons or thick slabs, marinated in spice and yogurt, and grilled or seared until the surface chars and the inside stays soft, then laid down the center in a line rather than a heap so it does not bunch. The sharp layer goes on next: finely sliced raw onion, a lace of green chutney, and lemon squeezed along the length so the spice reads bright instead of flat. The roll is closed in one tight motion, tucked at the base, and wrapped in paper. Good execution shows a seam that does not split, a paratha crisp at the edges and tender at the center, paneer that is charred and juicy rather than dried out, and onion and acid running the full length. Sloppy execution is squeaky overcooked paneer with no char, an oversauced interior that turns the bread to paste, a paratha fried so stiff it shatters when rolled, or chutney and lemon piled at one end so half the roll is bland and the other half all heat.
It shifts mainly by how the paneer is treated and how the bread and chutney are tuned. The classic line is yogurt-marinated grilled paneer; some stalls add a thin egg coating set onto the paratha before filling so the wrapper seals, while strictly vegetarian shops skip it and rely on the bread alone. The chutney can lean green and herbaceous or sharper with chili, and the onion can be raw and pungent or briefly soused. The meat kathi rolls of the same city, the potato version, and the Mumbai frankie built on similar logic are each their own subjects and deserve their own articles rather than being crowded in here. What stays constant is the format: a rich layered wrapper, a charred spiced paneer core, raw onion and acid through every bite, eaten on the move.