Knife Skills And Technique Authority tier 1

Sashimi Knife Technique Hira-Zukuri Sogi-Zukuri Usu-Zukuri

Japan (Edo-period sushi and sashimi knife culture; Sakai, Osaka as yanagiba production centre)

Overview

Sashimi cutting technique is the most technically demanding area of Japanese knife work — not merely slicing fish, but choosing the appropriate cut style for each fish type to optimise texture, flavour expression, and visual presentation. The three primary cuts are: hira-zukuri (平造り, flat cut) — the most common, a bold 5–7mm vertical slice drawn straight across the fillet using the full length of the yanagiba blade in a single smooth pull; sogi-zukuri (そぎ造り, diagonal slice) — the blade angled 30–45 degrees during the cut, producing thinner, wider slices that expose more surface area for delicate white fish like flounder and sea bream; and usu-zukuri (薄造り, paper-thin cut) — extremely thin, near-translucent slices cut on the extreme diagonal, typically of firm white fish like fugu (puffer fish), arranged in overlapping fans on the plate through which the plate pattern should be visible. Beyond these core styles: tataki (rough-chopped for tuna belly sashimi), kaku-zukuri (cube cuts for tuna donburi), ito-zukuri (thin julienne for ikura and shirako garnish), and katsura-muki (continuous thin sheet for daikon garnish). The yanagiba's single bevel and extreme length enable the critical single-pull cutting motion — never sawing back and forth — which preserves cell structure for clean flavour and appearance.

Flavour Context

Technique determines texture and flavour expression: usu-zukuri creates melt-on-tongue delicacy; hira-zukuri produces satisfying chew; proper cutting preserves pristine flavour

Key Principles

{"Single pull motion: draw the yanagiba through in one smooth motion — never saw; preserves cell integrity","Hira-zukuri (flat): bold vertical slices for most fish; sogi (diagonal): wider, thinner for delicate white fish","Usu-zukuri: near-translucent thin diagonal slices; fugu and white fish; plate pattern visible through slice","Knife must be sharp enough to slice without pressure — weight of blade should do the cutting","Cold fish slices more cleanly — chill fillet 30 minutes before cutting"}

Pro Tips

{"Wet a cloth with water and salt; wipe the cutting board between fish types to prevent flavour transfer","For usu-zukuri: hold the fillet against the index knuckle of the non-knife hand for consistent thickness guidance","Plate arrangement immediately after cutting — sashimi begins to oxidise and dry within 5 minutes","Yanagiba sharpness test: the blade should glide through a wet sheet of paper horizontally without resistance"}

Common Mistakes

{"Sawing motion — destroys cell structure, produces ragged edges, cellular bruising affects flavour","Room-temperature fish — warm fish crushes rather than slices cleanly","Incorrect cut for fish type — applying hira-zukuri to fugu (should be usu-zukuri) wastes the fish's characteristics","Blade angle inconsistency — changing angle mid-slice produces uneven thickness"}

Source

Japanese Cooking: A Simple Art — Shizuo Tsuji; Japanese Kitchen Knives — Hiromitsu Nozaki

Cross-Cuisine Parallels

{'cuisine': 'French', 'technique': 'Carpaccio paper-thin beef slicing with frozen meat', 'connection': 'Both use controlled temperature and specific blade technique to achieve near-translucent thin slices of protein for raw presentation'} {'cuisine': 'Italian', 'technique': 'Prosciutto thin-slicing technique', 'connection': 'Both have developed precise slicing techniques for raw protein where thickness directly determines texture and eating experience'}