Browse Techniques

Ankake (あんかけ — 'poured-over sauce') is a category of Japanese thickened sauce applied to many preparations — from agedashi tofu to chilled tofu, from soft-boiled egg dishes to stir-fried vegetables. The technique involves thickening a dashi-based sauce with katakuriko (potato starch) or cornstarch to create a glossy, flowing sauce that coats ingredients and retains heat longer than a thin broth. Ankake appears across Japanese cuisine: in itamemono (stir-fried dishes), in nimono where the final sauce is thickened, as a sauce for steamed egg custard (chawanmushi ankake), and in Chinese-influenced Japanese dishes where the thick, glossy texture is a characteristic feature. The ratio for a standard ankake: dashi 200ml, light soy sauce 1 tablespoon, mirin 1 tablespoon, sake 1 tablespoon, katakuriko 2 teaspoons mixed with 2 teaspoons cold water (always cold — to prevent premature gelatinisation). The starch mixture is added to the simmering sauce in a slow, continuous pour while stirring constantly — a sudden dump creates lumps. The sauce thickens almost immediately at simmering temperature; it must not be overcooked or the starch breaks down and the sauce thins again. Ankake is used in cold-weather preparations to keep food warm longer at the table.

Buri (Japanese amberjack, Seriola quinqueradiata) is one of Japan's most prized fish and the centerpiece of an unusual culinary tradition: the fish is known by completely different names at each stage of its life, and these names vary significantly by region. This 'life-stage naming' (shusse-uo—fish of promotion, mirroring career advancement) reflects the different flavor profiles, fat content, and culinary best-uses at each stage. In the Kanto (Tokyo) region, the stages are: wakashi (10–30cm), inada (30–40cm), warasa (40–60cm), buri (60cm+). In Kansai (Osaka), the same fish is named: tsubasu, hamachi, mejiro, buri. In various other regions, further local names exist. The culinary significance is not merely taxonomic—hamachi (young adult) has lighter, more delicate fat that suits sashimi and sushi, while mature buri (the older, fat-loaded fish caught in winter) has dramatically higher fat content (Toyama buri in December can reach 22–25% body fat) that calls for grilling, teriyaki, or shabu-shabu. The premium winter buri from Toyama Bay (kan-buri—cold season amberjack) is one of Japan's most celebrated seasonal ingredients—the kurobe-buri of Toyama has a dedicated ceremony and shipping protocol. The life-stage naming tradition also explains why 'hamachi' in Western Japanese restaurants typically means farmed amberjack, while 'buri' signals wild older fish.

Hamo (pike conger, Muraenesox cinereus) is Kyoto's quintessential summer fish—a seemingly paradoxical choice given that Kyoto is landlocked, but hamo's remarkable ability to survive long transport in oxygenated water made it the preferred fish for ancient Kyoto's imperial court, which could not receive most seafood alive from the coast. The fish has survived through Kyoto summers to become inseparably associated with the Gion Festival (Gion-matsuri) of July, and pike conger is sometimes called 'hamo no matsuri-mono'—the fish of the festival. The primary culinary challenge with hamo is its extraordinary bone structure: fine intramuscular bones that are too numerous and complex to remove by hand using standard techniques. The solution is honegiri (bone-cutting)—a specialized knife technique where the fillet is placed skin-down and the knife makes a series of extremely fine, close-spaced cuts through the flesh in a precise rhythm, cutting the bones without cutting through the skin. A skilled kanreki (chef of 60+ years) can make 26 cuts per inch; a professional standard is 15–18 cuts per 2.5cm. After honegiri, the scored fillet is briefly blanched (shabu-shabu style) in boiling water, causing the cuts to open into a white chrysanthemum-like bloom—an iconic preparation called hamo no otoshi (hamo shabu) that is served with plum sauce (baiku-su) or umeshu-based tare.

Kakiage is the mixed tempura fritter—battered clusters of small ingredients fried together into a single mass rather than individual pieces—and represents tempura's more democratic, home-cooking expression. While individual ingredient tempura (prawns, vegetables, fish) is associated with high craft, kakiage is assembly-based: a loose batter contains multiple ingredients (typically a combination of vegetables, small seafood, and aromatics) spooned into hot oil and fried until cooked through. The result is a rough-edged, irregular fritter where the batter binds disparate ingredients into a coherent piece. Classic combinations: mitsuba (trefoil) + sakura ebi (tiny dried shrimp) + sliced onion; corn + scallop; burdock + carrot + mitsuba; whitebait (shirauo) + negi. The technique challenge in kakiage is maintaining the loose batter-to-ingredient ratio—too much batter creates a dense, doughy fritter; too little means the cluster falls apart in the oil. The technique for oil entry is a swift spooning motion that deposits the mixture without spreading—a single confident spoon-drop creates a cohesive cluster. Kakiage appears in two contexts: as individual tempura in a full tempura meal (kakiage is typically served as the final piece before dessert), and as a topping for kakiage soba or kakiage udon, where the fritter is served on top of the noodles and softens into the broth.

The distinction between ichiban dashi (first dashi) and niban dashi (second dashi) is one of Japanese cooking's most important technical concepts—not just a frugality measure but a philosophical recognition that different applications call for different extract qualities. Ichiban dashi extracts the freshest, most volatile aromatic compounds from both konbu and katsuobushi: the konbu is cold-extracted for 20–30 minutes (or overnight refrigerator cold extraction for the most delicate version), then removed just before boiling; the katsuobushi is added to the 60–65°C water, steeped for exactly 90 seconds at near-simmering, then strained gently. The result is a crystal-clear, remarkably clean umami broth with the highest concentration of volatile aromatics—appropriate for clear soups (suimono), chawanmushi custard, and any preparation where the dashi's character will be visible and tasted cleanly. Niban dashi uses the spent konbu and katsuobushi from ichiban extraction, boiled more aggressively for 10–15 minutes to extract remaining glutamates and inosinates. It produces a stronger, less elegant, slightly more bitter broth appropriate for miso soup, simmered preparations (nikimono), and tsuyu base. The precise timing and temperature protocols of ichiban dashi represent one of Japanese cuisine's most discussed techniques—Shizuo Tsuji's specifications, Nobu Matsuhisa's adaptations, and various regional interpretations all exist within a recognizable framework.

Kazunoko (herring roe) is one of the most symbolically charged ingredients in Japanese new year cuisine, where its name 'kazu' (number) and 'ko' (child) represent prayers for progeny and family increase. Wild Pacific herring (Clupea pallasii) were once so abundant in Hokkaido that entire bays turned white with spawning activity—a historical record captured in old photographs and oral tradition. By the 1970s, overfishing had collapsed the Hokkaido herring population, and nearly all commercial kazunoko now comes from imported herring roe from Alaska, British Columbia, and Norway, salted and processed before export. Fresh kazunoko (the full herring roe sack, intact with membranes) is available briefly in Hokkaido in spring, but most culinary encounters are with the salt-cured, pressed form requiring desalting (ashirai) before use. The preparation for osechi involves soaking salted kazunoko in multiple changes of cold water over 12–24 hours to reduce salinity from 6–8% to approximately 0.8–1%, then marinating in dashi-seasoned soy and mirin to create a lightly glazed surface. The texture is remarkable: hundreds of tiny eggs compressed into a firm, crackling mass that pops audibly and texturally when bitten. The flavor is delicate—mild fish oil, subtle ocean mineral, and the seasonings applied during marination.

Nabeyaki udon (literally 'pot-cooked udon') is a winter preparation where udon noodles and toppings are cooked together in a small individual donabe (clay pot) or aluminum nabe pot, arriving at the table still boiling. The cooking vessel serves simultaneously as cooking implement, serving dish, and heat-retention vessel—the clay or thin metal continues to simmer the broth at the table, meaning the noodles continue cooking in the diner's presence. This active cooking element is part of the dish's character: diners eat in stages as the dish gradually changes temperature from boiling to warm, with the toppings (tempura, egg, mochi, mushrooms, kamaboko, nori, mitsuba) distributed across the surface and each item reaching its moment of optimal eating at a different point in the meal. The classic topping arrangement has a visual structure: a prawn tempura at the center or side, an intact raw egg nestled against the noodles, spinach or mitsuba clustered in one area, mushrooms arranged separately. The egg is the timing element—break it immediately and the broth scrambles it, or leave it to set slowly in the residual heat for a soft-cooked result. The broth in nabeyaki is typically heavier and more concentrated than standard udon broth because the toppings and continued cooking dilute it progressively.

The seiro (tiered bamboo steamer) is fundamental equipment in Japanese professional kitchens, used for a broader range of preparations than most Western kitchens would employ—from the obvious (steamed mochi, steamed fish, silken tofu warming) to the less obvious (reheating cooked rice, steaming eggs into custard, finishing soba noodles). The bamboo material is not incidental: unlike metal steamers, bamboo absorbs and re-releases moisture in a regulated fashion, creating a slightly drier steam environment that prevents water condensation dripping onto delicate foods (particularly chawanmushi custard and fine rice) and imparting a faint bamboo aromatic that complements the foods steamed in it. Japanese steaming as a technique category (mushimono) encompasses multiple applications: chawanmushi (savory egg custard), steamed fish (kabura mushi—fish steamed under grated turnip), kaburamushi (grated turnip with fish and a thick sauce), steamed clams, and the specific mushi-zakana (steamed fish) category. For seiro maintenance: bamboo steamers must be thoroughly dried after each use and stored in ventilated conditions—mold grows rapidly in damp bamboo and compromises food safety. High-quality Japanese seiro are made from moso-chiku bamboo in traditional mountain workshops, and their lifespan extends to decades with proper care.

Japanese egg culture — particularly the sweet rolled omelette (tamagoyaki, 玉子焼き) and its relatives — represents a technique family of deceptive simplicity and genuine complexity. Tamagoyaki is the rolled omelette served in sushi restaurants (slightly sweet, dense, firm), in obento boxes (sweet, pale, rectangular), and as an izakaya snack (dashi-style, lighter and more custardy). The distinction between styles is significant: atsuyaki tamago (sushi style) uses whole eggs with significant added sugar and mirin, cooked in multiple thin layers rolled together in a rectangular pan (tamagoyaki-ki); dashimaki tamago (home/restaurant style) adds dashi to the egg mixture for a more tender, savoury-sweet result that trembles slightly and is served in generous, softly set form; and the simple iri-tamago (scrambled Japanese style) uses very low heat and constant stirring to produce fine, soft curds of egg that are almost creamy in texture. The rectangular tamagoyaki pan is a required tool — the shape is impossible to achieve in a round pan. Japanese egg cooking philosophy: heat management is everything; Japanese eggs are generally fresher and richer than commercial Western eggs; and sweetness in eggs (a surprising element for Westerners) is considered entirely natural in Japanese culture.

Tamagoyaki (rolled Japanese omelet) encompasses a far wider technical and flavor spectrum than a single recipe description can capture. The fundamental technique—thin layers of seasoned egg poured sequentially into a rectangular tamago pan (tamagoyaki-ki) and rolled forward using chopsticks as each layer sets—is consistent, but the seasoning philosophy divides sharply by region. Tokyo-style (also called Edo-style) tamagoyaki: minimal sugar, strong dashi addition (hence dashimaki tamago), slightly savory, often stiffer in texture—suited for sushi topping (tamago sushi). Kyoto-style: significantly sweeter, less dashi, softer texture from sugar's hygroscopic quality—served as a side dish or in bento. Osaka-style dashimaki: abundant dashi to egg ratio approaching 1:1 produces an almost custardy, very soft roll that must be supported in a bamboo mat immediately after rolling. The professional technique challenge is maintaining moisture—too much dashi creates layers that separate or collapse, too little produces a dry, rubbery result. The tamago pan's rectangular shape (18 × 15cm standard; 21 × 18cm for larger operations) enables the characteristic layered roll, and copper pans (do-nabe tamago-ki) conduct heat most evenly. For sushi operations, the ability to produce tamago-sushi—a thick, sweet block of tamagoyaki seared onto sushi rice and bound with nori strip—requires mastering the sweetest, most stable version of the preparation.

Tsuyu (sometimes written 麺つゆ—mentsuyu, noodle sauce) is the foundational seasoned dipping and noodle sauce of Japanese cuisine, built on a base of katsuobushi dashi seasoned with mirin and soy sauce. Despite its seemingly simple construction, professional tsuyu preparation requires understanding the relationship between its components and the concept of concentration (kibun/bairitsu)—the sauce is intentionally made as a concentrate (kaeshi) that is subsequently diluted to different ratios for different applications. The kaeshi (literally 'return') is made by combining soy sauce, mirin, and sugar and allowing the mixture to rest at least overnight (ideally several weeks) so the components integrate and mellow. Fresh kaeshi has a sharp, separately identifiable edge to the soy and mirin; aged kaeshi has a smooth, unified flavor. Combined with dashi at varying ratios, the resulting tsuyu serves as: sōmen dipping sauce (kaeshi:dashi approximately 1:4), soba and udon dipping (1:3 for hot tsuyu, 1:2 for cold tsuyu due to ice dilution), tempura tsuyu (1:4), chawanmushi custard seasoning (1:6 or more), and noodle soup base (1:7 or more when forming the hot soup bowl itself). Regional variation: Kanto tsuyu is darker (more soy-forward) and saltier; Kansai tsuyu is lighter, amber-colored, with more sweetness from higher mirin content—these are not simply aesthetic differences but reflect different dashi compositions and soy sauce types.

Unagi kabayaki (grilled eel in sweet soy glaze) is among Japanese cuisine's most technically demanding preparations—and one of the most clearly bifurcated by regional identity. The Kanto–Kansai divide in eel preparation is total: Kanto opens the eel from the back (seppuku—a reference to ritual suicide, the samurai tradition of Edo); Kansai opens from the belly. Kanto preparation: after splitting from the back, the eel is steamed for 20–30 minutes before being grilled with tare—the steaming step removes excess fat and creates a more delicate, less oily result; Kansai skips the steaming and grills directly, producing a richer, slightly crisper, more intensely flavored result. The tare sauce for kabayaki is a perpetual sauce similar to yakitori tare—each shop's tare is maintained for years or decades, with constant replenishment. Unagi is considered peak quality during doyo no ushino hi (midsummer festival day, typically late July), though actually eel quality is higher in autumn when the eel has fattened for winter. The custom of eating eel in summer is partly folkloric—attributed to a 18th-century promotion by eel shop owners. Hitsumabushi (Nagoya-style eel over rice with the three-stage eating ritual) represents a regional variation with its own cultural weight. For professionals, the endangered status of Japanese eel (Anguilla japonica) makes provenance and sourcing increasingly important.

Yakimono—the category of Japanese grilled preparations—encompasses a far broader spectrum than the English word 'grilling' suggests. The Japanese yakimono vocabulary distinguishes between at least eight distinct grilling approaches, each suited to different ingredients and occasions. Shioyaki (salt-grilled) uses only sea salt for seasoning, allowing the ingredient's inherent character to express fully—used for fish, vegetables, and simple proteins. Teriyaki (glaze-grilled) uses the alternating dip-and-grill method with tare to build lacquered layers. Miso-yaki (miso-grilled) applies miso-based marinades that create distinctive Maillard crusts with deep umami. Saikyo-yaki uses Kyoto's white saikyo miso paste for an elegant golden glaze particularly associated with fish. Tsuke-yaki (marinated-grill) applies liquid marinades of sake, mirin, and soy before grilling. Konnyaku-yaki, nasu-yaki, and shishito-yaki represent vegetable grilling traditions with their own techniques. At the equipment level, yakimono spans the kamado clay oven, shichirin tabletop charcoal grill, teppan flat plate, robatayaki open hearth, and futsuu household gas grill—each creating different surface effects and aromatic profiles. Understanding that 'yakimono' is a systematic technical vocabulary, not a single technique, is essential for professional kitchen operations.