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Tempura generally coats seafood or vegetables in a liquid batter before frying them in hot oil. Ingredients, batter and oil all shape the result. Individual pieces coexist with kakiage, made from mixed smaller ingredients, while regional uses of the word can refer to different foods.
MAFF’s Tokyo account lists shrimp, Japanese whiting, squid and conger eel, with aubergine and shishito peppers in its recipe. Showa Sangyo’s example also uses sweet potato, mushrooms and shiso leaves. A whole leaf, a portion of fish or a cut vegetable can each be coated and fried.
A common batter combines wheat flour and water, sometimes with egg. A light dusting can help the wet coating adhere before frying sets it into an outer layer. This is a batter-fried preparation; breadcrumb-coated Japanese foods use a different coating structure.
MAFF’s shrimp recipe removes the head, vein and shell and trims the tail; fish is opened and deboned. Vegetables are cut according to their type, and wet surfaces are dried. The prepared ingredient’s shape and surface affect coating and cooking.
Kakiage combines small ingredients into portions for frying. Showa Sangyo’s example mixes chopped shrimp, onion and mitsuba with a little flour and batter before lowering portions into the oil. Its assembly differs from coating a single shrimp or piece of fish.
Tempura can be served with tentsuyu, a stock-and-soy-based dipping sauce, or with salt, grated daikon or lemon. Tendon combines it with rice and a seasoned sauce. Accompaniments vary by restaurant, region and preparation.
The introduction to a 2019 cookery-science study explains that water, mixing and standing promote gluten development and greater batter viscosity. Conventional practice therefore uses low-protein wheat flour, cold water and limited mixing. This describes wheat-based batter, rather than a rule for every possible formulation.
The water-rich batter helps limit moisture loss from the ingredient inside. In direct contact with hot oil, the outer coating rapidly loses water as vapour while oil enters it. The ingredient cooks as the coating develops its crisp texture: two different changes occurring together.
Showa Sangyo’s example varies oil temperature around 160–180°C by ingredient and notes that adding too much at once lowers the temperature. Draining and avoiding piles that trap steam also affect the coating. These operations work together rather than relying on temperature alone.
Tempura premixes can contain starch, raising agents or powdered egg yolk. Showa Sangyo’s example needs water but no extra egg, and does not require chilling the water, flour or utensils. It still calls for light mixing, with a little dry flour allowed to remain. The formulation changes some preparation steps; mixing instructions still matter.
Sesame oil is closely associated with traditional Tokyo seafood tempura. MAFF’s present-day household recipe blends seven parts salad oil with three parts sesame oil, while Showa Sangyo’s example uses vegetable oil. Oils may be used alone or blended, changing the formulation and aroma.
MAFF associates an early introduction with Portuguese contact in the mid-sixteenth century, and presents Nagasaki’s seasoned-batter fritters as one explanation of tempura’s origins. Today’s Nagasaki version retains a thicker, sweetened coating. The later Edo seafood preparation developed different ingredients, batter and serving practices.
Several explanations of the word tempura coexist. The Edo-Tokyo Museum lists Portuguese and other language theories, as well as a naming story about Santō Kyōden recorded in texts including Kumo no itomaki of 1846 and Zokuji hyakkō kigen of 1865. These later accounts preserve naming stories alongside competing linguistic explanations.
Showa Sangyo’s historical account cites the name in Ryōri shokudōki of 1669 and a recipe in Kasen no kumaito of 1748. The latter describes fish coated in wheat flour and fried, and vegetables coated in a mixture of flour, water and soy sauce. Edo-period records thus describe different coatings for different ingredients.
As oil became more available, tempura entered Edo’s street-food economy. The Tokyo Metropolitan Library cites Kiyū shōran on Kichibei’s Nihonbashi stall, relating the food to popular eating around the nineteenth century. Skewered battered seafood suited buying and eating on the street.
Utagawa Yoshitsuya’s Edo-specialities sugoroku, dated about 1848–54, includes a Suwachō kinpura square showing a plate of fried food. The metropolitan library explains kinpura in relation to egg-yolk batter, or sometimes buckwheat flour, distinguishing it from ordinary stall offerings.
The Ota museum’s commentary identifies expensive egg-batter tempura served in seated rooms during the Kaei period. Showa Sangyo’s account places specialist restaurants, formal dining and cooks bringing their equipment to clients within late-Edo and Meiji developments. Street food and more costly dining thus belong to the same wider history.
MAFF and Showa Sangyo identify chefs relocating after the 1923 Great Kantō Earthquake as one route by which Edo-style techniques spread. Oil remained costly in early Shōwa, making tempura a special-occasion food for many households; wartime shortages further constrained cooking.
Postwar economic recovery and greater availability of ingredients and oil brought tempura to more home tables and supermarket prepared-food counters. Today it ranges from everyday home cooking and inexpensive prepared food to specialist restaurants frying pieces individually for their guests.
Showa Sangyo records a flour-and-oil gift set in 1959, a tempura mix sold in Los Angeles in 1960, and the Japanese household product Shōwa Instant Tempura Flour in 1961. Its company history distinguishes the gift set, American sales and later Japanese household product.
Showa Sangyo introduced its household Ōgon tempura mix in 1983 and a commercial version in 1984, followed by formulations emphasizing easy mixing or less oil. MAFF also describes automated fryers and chain expansion from 1989 onward. Homes, supermarket counters and restaurants provided different settings for such products and equipment.
Nagasaki tempura has a seasoned coating including sugar and sake and can be eaten without dipping sauce. Okinawa’s food-culture database describes tinpura with a thicker, egg-rich seasoned batter, also eaten without tentsuyu. These differ from Tokyo seafood tempura and from fried fish-paste foods called tempura in parts of western Japan.
Prepared ingredients, liquid batter and hot oil; seafood and vegetables are common.
Kakiage combines smaller mixed ingredients into portions, while individual pieces are coated separately.
Water and mixing promote gluten development and viscosity, affecting the coating; the formulation still matters.
No. Formulations differ; the Showa example here calls for water without extra egg.
No. Seasoned thick-batter forms in Nagasaki and Okinawa, and some regional fish-paste foods, need to be distinguished.
