Bengali Fish Mastery: Scaling, Cutting and Cooking Rui, Katla and Pabda the Right Way

There is a saying in Bengal: machhe bhate Bangali, the Bengali is made of fish and rice. It is not poetry, it is fact. In Bengali kitchens on both sides of the border, freshwater fish is the daily protein, the centrepiece of celebrations, and a subject of genuine expertise. Get the cutting wrong and even the freshest fish disappoints; get it right and a humble carp becomes a banquet. For anyone cooking Bengali food in Britain, learning to handle fish properly is the single biggest upgrade you can make.

Meet the Fish

Bengali cooking revolves around freshwater and brackish fish rather than the sea fish of much of Britain. The everyday heroes are the carp family, but the repertoire is wide:

• Rui (rohu) — the workhorse of the Bengali table, a freshwater carp with firm, slightly sweet flesh and plenty of bones. It holds up to robust gravies and frying, making it endlessly versatile.
• Katla (catla) — a larger carp, deeper-bodied with a famously prized head. Richer and fattier than rui, especially around the shoulders and head.
• Pabda — a small, soft-fleshed, delicate catfish, almost boneless along the fillet, cooked whole in light, soupy gravies. It demands gentleness, not bold spicing.
• Others you will meet: ilish (hilsa), the king of Bengali fish, oily and intensely flavoured; tangra and magur catfishes; koi; and the small fish (chhoto maach) cooked whole or mashed.

Each of these has its own texture, fat content and bone structure, and a good Bengali cook chooses the cut and the dish to match.

Scaling and Cleaning

Before any cutting comes the cleaning, and Bengalis are exacting about it. Scaling is done thoroughly, scraping against the grain until the skin is smooth, because stray scales ruin a delicate jhol. The fish is gutted, the gills removed, and the cavity cleaned well. Many cooks rub the cut pieces with salt and turmeric and leave them briefly before cooking; this firms the flesh, tames any muddiness and prepares the surface for frying. That quick turmeric-and-salt massage is a near-universal first step and worth adopting as a habit.

The Art of the Cut

Here is where Bengali fish cookery diverges sharply from Western fishmongery. Large carp like rui and katla are not filleted; they are cut crossways through the bone into steaks called gada or simply darned pieces. This bone-in cutting keeps the flesh moist during cooking and lets the gravy penetrate, and it is non-negotiable for a proper jhol or kalia.

The cuts are chosen with care:

• Cross-cut steaks (peti and gada) — the belly portion (peti) is the fattiest and most prized for richness, while the back (daga) is meatier and firmer. Cooks distribute these deliberately among diners.
• The head (muro) — cut as a whole or split, treated as a delicacy in its own right.
• The tail (lyaja) — the bonier end, beloved for a particular textural pleasure and often cooked with rice or dal.
• Delicate fish like pabda — left whole, never cut into steaks, and cooked gently to keep them intact.

The thickness of the cut matters too; too thin and the fish dries out and breaks up, too thick and it cooks unevenly. A consistent, confident hand with a heavy knife is part of the craft.

Why the Head and Tail Are Prized

To a Western cook, the head and tail might seem like scraps. In Bengal they are treasures. The fish head, especially of a big katla, is rich, gelatinous and full of flavour, and it stars in dishes like muri ghonto, where the broken-up head is cooked with rice or moong dal and aromatics into something deeply savoury and comforting. Serving a guest the head is a mark of honour. The tail, meanwhile, is loved for its concentration of small bones and skin, picked over slowly and often cooked into a homely dal-and-tail preparation, lyaja ghonto. Nothing of a good fish is wasted, and the so-called lesser parts often carry the most prized flavour.

Matching Fish to Dish

The final piece of mastery is knowing which fish suits which preparation:

• Rui shines in everyday macher jhol (a light, brothy curry) and richer kalia (a deeper, spicier gravy), and fries beautifully for maach bhaja.
• Katla, with its fatty head, is ideal for muri ghonto and rich kalia, where its richness is an asset.
• Pabda belongs in delicate, soupy gravies, classically a pabda jhal with mustard, where its softness is the whole point.
• Hilsa demands minimal interference, steamed with mustard as shorshe ilish so its glorious oily flavour leads.

Sourcing and Practising in Britain

British cooks can get remarkably close to the real thing. Bangladeshi and Indian grocers across the UK stock frozen rui, katla, pabda, hilsa and the small fish, very often pre-cut into the correct bone-in steaks, which solves the hardest part for beginners. Ask the counter to cut a whole fish for you if you want to learn, watch how they portion the belly and the head, and start with rui because it is forgiving. Master the salt-and-turmeric rub, the bone-in steak and the gentle hand with delicate fish, and you will understand why, for a Bengali, the right cut is half the cooking.