Knives & Cutting

Boti

A floor-mounted curved blade from Bengal that you cut against while seated for fast prep.

A boti is a traditional South Asian cutting tool with a tall, curved blade fixed upright on a wooden or metal base that rests on the floor. The cook sits and braces the base with one foot, then draws fish, vegetables, and meat across the stationary blade using both hands, giving speed and control. Widely used in Bengali and other Indian kitchens, it is prized for filleting fish and slicing through tough produce.

The boti is a traditional Bengali chopping tool: a curved steel blade set permanently into a heavy hardwood base, with its sharp edge arcing upward and toward the user. Unlike a knife you hold, the boti stays fixed on the floor while the cook, seated cross-legged behind it, brings the food to the edge — or slides it along the curve on a small wooden block called a kath. The geometry lines up the cook's shoulders, elbows, and gravity in a single downward direction, which is why experienced hands can clear piles of onions, greens, and fish at a pace no standing knife work can match.

It belongs to the seated Bengali kitchen workflow sometimes called batighor, where prep, washing, and cooking all happen at floor level. That posture is not incidental — it is precisely why the blade can be left exposed and upward-facing without being dangerous, since the cook's body sits naturally behind and above the edge rather than crossing over it. In urban Indian and Bangladeshi homes the boti has largely given way to cutting boards and chef's knives, but it remains standard in rural households, sweet shops, fish markets, and the prep corners of temple and feast kitchens.

The boti is a specialist's tool, tuned for bulk repetitive chopping rather than precision cuts. Its rocking curve works best on soft-to-medium produce — onions, garlic, ginger, leafy greens, coconut meat, and small bony fish — and the blade is not built for bones, frozen items, or hard gourds: pushed there, the tip chips or the edge rolls. Learn the posture, the guiding hand, and the rhythm of the kath, and it will outpace almost any other implement for the high-volume vegetable work that Bengali cooking demands.

Alternatives

Chef'S Knife & Cutting BoardCleaverMandoline For Vegetables

Types & varieties

Sabji boti

Smaller-bladed version sized for vegetables and greens, the everyday home-kitchen type.

Macher boti

Heavier, broader blade used for chopping fish, with a thicker edge that resists bone strikes.

Narkel boti

Stout blade preferred for cracking open and shredding coconut meat.

Ara

Related curved chopping blade used across eastern India, often forged as a single piece with a ring base rather than mounted in wood.

Botni

Smaller handheld cousin used at table level for finer work like slicing onions and green chilies.

Anatomy and setup

A working boti has three parts: the curved steel blade, the heavy wooden block it is wedged into, and the optional kath — a small flat piece of wood the cook slides back and forth along the edge. The blade sits with its concave (sharp) side facing the user and arcs upward; the convex back of the blade is held firmly in the slot of the base. Traditional examples are single-beveled, sharpened only on the inside of the curve, which is why the cut pulls the food slightly toward the cook rather than driving it away.

The base must be heavy enough that chopping does not rock it; a light base is the single most common reason beginners struggle.
The kath is not optional for safe fast work — it is the barrier between your guiding hand and the edge, and it doubles as a measuring surface for even cuts.
Single-bevel geometry means the boti cuts cleanly on the push stroke; do not expect a slicing draw to work the way it does on a Western chef's knife.

The seated workflow (batighor)

Floor-level cooking shaped the boti's design and still dictates how it is used. The cook sits cross-legged or on a low plank directly behind the base, knees out, back upright. Food is gathered on the kath or on the flat top of the base, and the guiding hand rides the kath along the curve while the other hand drives a steady vertical chop. This posture frees the shoulders, lets the weight of the upper body do the cutting, and keeps both hands clear of the arc of the blade.

Sit squarely behind the blade, not to the side — a sideways stance is the classic setup for a wrist strike on the edge.
Anchor the base with the sole of one foot or a folded damp cloth to keep it from creeping forward on smooth floors.
Work in batches small enough to control: the boti rewards rhythm and repetition, not piles of loose food.

Care and sharpening

Because the blade is wedged into wood rather than bolted, both halves of the tool need different care. The steel wants to stay dry and lightly oiled; the wood wants to stay dry and never soaked. Sharpen only the inside of the curve, following the existing bevel, and avoid the temptation to file the flat back — that destroys the single-bevel geometry that makes the tool cut at all.

File or stone along the inner curve, light pressure, short strokes; check the edge with a thumb pad rather than paper.
After washing, wipe the blade bone-dry and rub a thin film of mustard oil over it; mustard oil is the traditional choice in Bengal because it resists humid-air rust better than many vegetable oils.
Keep the wooden base out of standing water and out of direct sun for long periods — swelling and shrinking will loosen the wedge and the blade will shift in use.
If the wedge loosens, remove the blade, clean the slot, dry everything thoroughly, and reseat with a fresh wooden wedge driven in along the grain.

Common uses

Fast chopping of onions, garlic, ginger, and green chilies in bulkRough-cutting leafy greens such as spinach (pui shak), amaranth, and fenugreekChopping fish for curries and fries, including small bony varietiesCracking open and shredding coconut meatBulk prep for feasts, prasad, and community meals where speed matters more than precisionCrushing aromatics with a rocking press when a mortar and pestle is not at handQuick portioning of vegetables directly into the cooking pot beside the prep spot

Tips & pitfalls

Sit cross-legged directly behind the blade so your elbow drives straight down; leaning sideways is the most common way cooks catch a forearm on the edge.
Anchor the wooden base with one foot or a folded damp cloth — a creeping base is what causes most 'accidents' with a boti.
Curl the guiding hand into a claw and press the food down with the flat of your knuckles, never with fingertips extended toward the edge.
Use a kath (small flat wooden block) under the food and slide it along the curve; it is both a finger-guard and a control surface for even cuts.
Sharpen along the inside curve only; the outer face is the back of the blade and must stay flat to preserve the single-bevel cut.
Keep the wooden base dry and rub the blade with mustard oil after use; in humid Bengali climates this is the difference between a tool that lasts decades and one that rusts in a season.
Do not chop hard bones, frozen items, or thick gourds — the blade is tuned for vegetables and soft-to-medium fish, and the tip will chip or the edge will roll.
For leafy greens, gather them into a tight bundle on the wooden block before each cut so pieces do not scatter and cuts stay even.

Good to know

Origin: Bengal (eastern India and Bangladesh)
Construction: Curved steel blade (often high-carbon or mild steel) fixed into a heavy hardwood base, sharp edge curving upward toward the user
Posture: Used while seated on the floor; the base sits on the ground or a low platform
Blade shape: Sickle-curved, traditionally single-beveled; a small wooden 'kath' block is often used beneath the food as a moving guide
Typical blade length: Roughly 15–25 cm of cutting edge; base roughly 20–30 cm long and weighted for stability
Material of base: Dense hardwood such as segun (teak) or sal, with the blade driven into a slot and wedged tight
Primary use: Rapid chopping of vegetables, leafy greens, fish, and coconut, plus crushing aromatics with a rocking press
Maintenance: Sharpened along the inner curve only with a file or whetstone; blade rubbed with mustard oil; base kept dry