Taiyaki and Japan's Street Sweets: Fish-Shaped Cakes and Their Cousins

On a cold afternoon in Japan, a small shop window fogged with warmth often holds a row of golden fish, each the size of a hand, being flipped in cast iron molds. Taiyaki (a fish-shaped cake, usually filled with sweet red bean paste) is one of the country's best-loved street sweets, and one of the few that has a recorded birthday, a story about luck, and cousins in several other shapes.

This guide covers where taiyaki came from, how it is made, what fillings to look for, how it relates to the round cakes called imagawayaki, and how to find a good one on your trip. It also looks at related street sweets, and gives simple tips for eating them with confidence.

A Fish for Good Luck

The fish in question is the tai, the red sea bream. In Japan the tai is a symbol of celebration. It appears on tables at weddings and festivals, and its name echoes the word medetai, which means auspicious or joyous. Because a whole sea bream was once a luxury only the wealthy could afford, shaping a humble cake into the form of a tai made good fortune available to everyone at a low price.

That is the logic behind taiyaki. The word breaks into tai (sea bream) and yaki (grilled or baked), and the form is pure charm: scales pressed into the surface, a curved tail, a round eye, and a body full of sweetness. It remains popular with children and adults, and many people eat one in the colder months as a hand warmer and a treat at the same time.

The Birth of Taiyaki

Taiyaki is recorded as first sold in 1909 by Seijiro Kobe, founder of the shop Naniwaya Sohonten in the Azabu-Juban district of Tokyo. According to accounts of the shop's history, he had been struggling to sell imagawayaki, the round filled cakes he made, and he decided to bake the same batter in a mold shaped like a sea bream instead. The new shape was an immediate success.

The idea spread across Japan in the decades that followed and then beyond. It reached Korea during the early twentieth century, where a similar pastry is known as bungeo-ppang, and it later turned up in other parts of Asia and in cities around the world. Naniwaya Sohonten is still associated with the origin story today, and Azabu-Juban remains a favorite neighborhood for strolling and snacking, but opening hours and menus change, so check before you go.

How Taiyaki Is Made

The batter is similar to a pancake or waffle batter, made from wheat flour, sugar, egg and a raising agent, and it is poured into a pair of fish-shaped iron molds that are heated on both sides. The cook adds a spoonful of filling, closes the mold, and bakes the fish until the outside is golden brown and crisp. The mold is then flipped to cook the other side evenly, and the finished fish is lifted out with a thin pick.

There are two broad ways to bake. In one, each fish is cooked in its own individual mold, sometimes called a single-mold or natural style, which gives a crisp, thin crust and a more handmade look. In the other, many molds are linked together on a large griddle that rotates, making dozens at once. Shops that use the single-mold technique often advertise it proudly, since the careful, hands-on process is thought to produce a lighter texture.

Fillings Beyond Red Bean

The classic filling is anko (sweet red bean paste), made from azuki beans boiled with sugar. Many shops offer both tsubuan, which keeps the beans whole or partly mashed for texture, and koshian, which is sieved to a smooth paste. A good taiyaki is often judged by whether the paste reaches all the way to the tail.

Modern fillings are limitless. Custard is the most common alternative, followed by chocolate, sweet potato, cheese, matcha cream and seasonal flavors such as chestnut in autumn. Some shops go savory, filling their fish with okonomiyaki ingredients, curry, sausage or gyoza filling. There are even taiyaki cones filled with soft serve ice cream, a combination that works year-round. Smaller versions called kingyoyaki, shaped like goldfish and often sold in bags, are fun to share.

Imagawayaki and Its Many Names

Imagawayaki is the older cousin of taiyaki. It is a thick, round cake baked from a similar batter and usually filled with red bean paste or custard. According to tradition, it was first sold near Imagawa Bridge in Kanda, Edo, during the An'ei era (1772 to 1781), and it took the name of the place. The mold produces a shape modeled on an old oval coin called an oban.

Its name varies by region. Outside the Kanto area, the most common name is obanyaki, while in Kansai and Kyushu it is often called kaiten-yaki (rotating cake) or kaiten manju, referring to the way the cake is turned as it bakes. Other names appear in local shops, and some are tied to a single brand. Imagawayaki is different from dorayaki, which uses two pancakes cooked separately and sandwiched around a filling, and is usually served cool rather than hot.

Taiyaki Around the World

Few Japanese snacks have traveled as widely. In Korea, bungeo-ppang is a winter street food sold from carts and stalls, and it is often filled with red bean paste in the same way. Cafes in Asia, Europe and North America now serve their own takes, sometimes stuffed with ice cream, cream cheese or chocolate, and sometimes baked into a wafer cone shape.

Back in Japan, the fish-shaped mold has become a canvas for local creativity. Shops in tourist towns press regional symbols into their cakes or create limited seasonal fillings, such as sakura in spring or sweet potato in autumn. Some even sell small molds for home use, which makes the cake an easy project for families who want to bring a taste of Japan into their own kitchens.

Other Street Sweets Worth Trying

Japan's street and festival snacks include many sweets in the same spirit. Dango (skewered rice dumplings) are served plain, grilled and brushed with soy glaze, or covered in sweet bean paste. Daifuku are soft mochi (rice cake) stuffed with anko, sometimes with a whole strawberry inside in spring. Kakigori (shaved ice) is a summer classic, and roasted sweet potatoes, called yakiimo, are sold from trucks and stalls in winter.

Among baked treats, castella (a sponge cake of Portuguese origin, popular in Nagasaki), melon pan (a sweet bun with a cookie crust) and baby castella bite-size cakes are common at markets and shrine approaches. Each reflects a piece of Japan's food history, from the arrival of European sweets to the adaptations that followed. Together they make a snack route of their own.

Tips for Enjoying Taiyaki

Taiyaki is best eaten fresh and hot, so choose a shop where you can watch the molds turning and ask for one straight off the griddle. Hold the fish by the tail or wrap it in the paper provided, and take bites from either end. A friendly debate persists in Japan about whether to start with the head or the tail, and there is no wrong answer.

Look for shops in shopping streets, near shrines, in train stations and in department store basements. Prices are usually modest, and hours and flavors change with the seasons, so check each shop's current information. Eat near the stall before walking away, keep napkins handy because the filling is hot, and dispose of wrappers in a bin. If you cannot decide between flavors, order one red bean and one custard and compare.