A Single Piece Filled with Craftsmanship: The Complete Guide to Konpeito

Konpeito came to Japan from Portugal 480 years ago. The year was 1569, during Japan’s Sengoku period. It was the era when the warlord Oda Nobunaga was the country’s most powerful ruler. Luís Fróis, a Portuguese Catholic priest, tried to meet Oda Nobunaga at Kyoto’s now-lost Nijo Castle to obtain permission for missionary work. One of the gifts he brought with him was “confeitos,” a Portuguese word meaning “sugar confectionery.”

At the time, sugar was extremely valuable in Japan. Even Nobunaga, the ruler of the country, rarely had the chance to taste something so sweet and delicious. It is said that he took a great liking to confeitos and ate them with delight. Konpeito was then passed on to the next era under Toyotomi Hideyoshi. As Hideyoshi loved chanoyu, the Japanese tea ceremony, tea culture spread widely, and konpeito came to be enjoyed as a sweet served at tea gatherings. Konpeito at the time did not have sharply defined points like today’s version; it had gentler bumps, more like a walnut. It also seems to have been plain white rather than colorful.

In the Edo period, a townsman in Nagasaki succeeded in making konpeito domestically for the first time. Later, through the Meiji period, konpeito artisans appeared across Japan, including Kyoto and Edo, and the candy spread rapidly. Although it became popular, it was handmade and could not be mass-produced. A sugar merchant in Osaka then invented a machine that enabled mass production and applied for a patent in 1903. Another merchant in Osaka bought the patent. Around 1907, he built a factory in Osaka’s Nishi Ward equipped with 20 rotating kettles for making konpeito and began mass production. This was a turning point for konpeito.

From the Meiji period, when mass production of konpeito began, to the present day, four types have been made: “Tairin” at Approx. 15 mm in diameter, “Churin” at Approx. 12 mm, “Shorin” at Approx. 7 mm, and the smaller “Gokushō” at Approx. 4.5 mm.

In Japan, there is a culture of sensing the seasons through sweets, especially wagashi, and the colors of konpeito represent the changing seasons. Pink represents spring cherry blossoms, yellow-green represents early summer greenery, yellow represents autumn leaves, and white represents winter snow. Today, colorful konpeito is made using food coloring.

Today, many varieties are flavored not only with sugar but also with flavorings such as peach, pineapple, lemon, melon, and muscat grape. Because konpeito is made from sugar and has a refreshing sweetness, and because it comes in many flavors, it is easy to enjoy without getting tired of it.

Even after two weeks of production, konpeito only reaches Approx. 15 mm in diameter. It grows by only Approx. 1 mm per day. This shows just how much time and effort this candy requires.

A large rotating kettle is essential for making konpeito.
Made of iron, it measures 1.8 m in diameter, 44 cm deep, and weighs 800 kg. A gas burner is attached to the bottom of the kettle, and the candy is made while being heated. To make the konpeito grow, syrup made by dissolving sugar in water is poured over it at regular intervals. As that moisture evaporates, the temperature inside the konpeito factory reaches at least 55°C, with humidity at least 70%.

This kettle slowly rotates clockwise twice per minute. Its tilt is Approx. 30°, and this angle is adjusted depending on the size of the konpeito grains. Determining the right angle of the kettle is essential for making the candy larger and forming beautiful points, and it is said to be where the artisan’s skill truly shows. It takes years to develop that sense.

How do the horns, konpeito’s most distinctive feature, form? Next, we’ll introduce the konpeito production process.

To make konpeito, a “core” is needed. Sesame seeds were used in the Edo period, later replaced by poppy seeds, and today granulated sugar is used. By pouring syrup over each grain of granulated sugar, the candy grows larger while its points develop.

First, granulated sugar is placed in a kettle set at a slightly steep angle and heated while rotating. Syrup made at a granulated sugar-to-water ratio of 3:1 is poured over the granulated sugar. This process of pouring syrup and drying it with heat continues for Approx. three days. After three days, the square grains of granulated sugar become round beads.

From the fourth day, the work of forming the points begins. The angle of the kettle is loosened slightly, and syrup with the same sugar concentration is poured over the candy. By setting the kettle angle to 30°, the young konpeito pieces slide down inside the kettle, which is said to be essential for forming the points. As syrup is added, small protrusions called “pocchi” appear. These pocchi gradually grow into larger points.
The process then moves on to coloring and flavoring, and finally, “tome-mitsu” finishing syrup is added to prevent color transfer, completing the konpeito.

Why do the points form during this production process? It seems that the exact mechanism has not been fully clarified, but it is believed that when pieces of konpeito collide with each other inside the kettle, the points where their syrup sticks together become protrusions, which then grow larger. That is why the angle of the kettle is so important. Konpeito is a mysterious sweet with surprising depth.

The Konpeito Museum lets visitors learn about the history and culture of konpeito through a hands-on candy-making experience. It has locations in Yao and Sakai in Osaka, as well as in Fukuoka. At the Yao location in particular, you can not only experience making konpeito, but groups of at least 10 can also add an optional factory tour and see artisan techniques up close. It is Approx. a five-minute walk from Yao-minami Station on the Osaka Metro Tanimachi Line. As we approached the factory, a sweet aroma began drifting from somewhere nearby.

Here, you can also buy colorful konpeito in a variety of flavors, making it perfect for souvenirs. When events are held, you may even meet the Konpeito Museum’s mascot character, Sugar Love-chan.

At the Konpeito Museum, you can enjoy a hands-on konpeito-making experience called the Premium Konpeito Workshop, where you can customize the size, color, and flavor to your liking. Making konpeito from scratch takes more than 10 days, so this facility lets you experience the final finishing steps. The experience uses a mini kettle 30 cm in diameter and takes Approx. 60 minutes. With a parent or guardian accompanying them, everyone from small children to adults can enjoy it. The experience is also available in foreign languages and is popular not only with Japanese visitors but also with international tourists. Up to 12 people can participate at the same time, so it is recommended for enjoying with friends or family!

At Konpeito Museum Yao, groups of at least 10 can also add an optional factory tour. Sixteen large kettles, each as wide as 2 m in diameter, are lined up in a row. You can watch artisans making konpeito up close. The inside of the factory is filled with a very sweet aroma! For anyone who loves sweets, it is a wonderfully happy space.

You can see sugar syrup flowing automatically and artisans gently stirring konpeito with large hoe-like tools. There is apparently a technique to stirring with the tool without breaking the points of the konpeito.

What stood out especially was the temperature inside. On the day of our visit, it was an astonishing 42°C! We felt not only the heat but also the humidity. In the hottest part of midsummer, it apparently reaches 55°C. In this harsh heat, you can feel the patience and artisan spirit of the konpeito makers who carefully craft the candy over a long period of time. Konpeito is sweet and delicious, and it is easy to crunch through it without thinking. But after learning how much effort goes into nurturing each piece, I felt that next time I should savor it more carefully. A factory tour will likely change the way you see konpeito.

At the shop, you can buy standard konpeito as well as unique, original varieties available only at the Konpeito Museum. With so many colors and flavors, they make ideal souvenirs. When giving them to family or friends, be sure to share the story of the patience shown by konpeito artisans.