Japanese Sashimi Knife Technique: The Hiki-Zukuri, Usu-Zukuri, and Kaku-Zukuri Cutting Schools

Japan — sashimi cutting techniques codified in professional Japanese sushi and kaiseki training; distinct schools associated with regional and restaurant traditions

Sashimi knife technique encompasses a specific vocabulary of cuts that each produce distinct textural, visual, and flavour experiences from the same piece of fish — making the cutting school a genuine culinary decision rather than a purely aesthetic choice. Understanding hiki-zukuri, usu-zukuri, kaku-zukuri, and related cutting techniques provides the technical foundation for informed sashimi presentation and the philosophical understanding of why the same fish can taste meaningfully different depending on how it is sliced. The yanagiba (willow-leaf knife) is the exclusive tool for sashimi cutting — its long, single-bevel blade designed for the pulling motion that produces clean cuts through protein with minimum cellular compression. The three primary sashimi cutting methods each use the yanagiba differently: hiki-zukuri (drawn cut) is the standard technique — the knife is drawn smoothly from heel to tip in a single motion, cutting slices of 5-8mm thickness. The pulling motion produces a clean, smooth cut face with minimal cellular rupture; the slice face is slightly angled from the perpendicular, creating the characteristic lozenge cross-section of standard nigiri and sashimi slices. Usu-zukuri (thin cut) is used for fish with firm, white flesh (flounder, sea bass, snapper) that has delicate flavour overwhelmed by thick slicing — extraordinarily thin, nearly translucent slices (1-2mm) cut at a steep angle to the horizontal, arranged overlapping on the plate to create a flower-petal effect. The thin slicing exposes maximum surface area to seasonings and allows the fish's delicate flavour to register clearly. Kaku-zukuri (square cut) produces neat cubes from dense, fatty fish (tuna, swordfish, yellowtail) — a straight, downward cut producing uniform blocks that emphasise the fish's density and concentrate flavour per bite. Variation: ito-zukuri (thread cut) produces very fine julienne from squid, cuttlefish, and fine-textured fish for preparations where visual impact and delicacy of flavour is prioritised.

• French classical training includes specific knife angles and motion techniques for slicing gravlax and carpaccio — the same principle of cut angle and motion producing different textural and visual outcomes from the same raw product → Tranchage (slicing) technique for raw and cured fish preparations French
• Italian carpaccio's extremely thin raw beef slicing parallels usu-zukuri's extreme thinness philosophy — both prioritise maximum surface area exposure and minimal resistance per bite for delicate flavour appreciation → Carpaccio technique — very thin raw beef slicing Italian
• Korean yukhoe's fine julienne cutting of raw beef shares ito-zukuri's precision fine-cut technique — both produce thin, uniform strands from protein that maximise surface area for seasoning penetration → Yukhoe (Korean raw beef tartare) precise knife cutting Korean

Indirect — the cutting technique does not add flavour but determines how flavour is experienced: thickness affects chewing time and flavour release duration; cut angle affects seasoning surface area; pulling vs pushing affects cellular integrity and moisture retention