Summer Wagashi: Exploring the Allure of Mizu-Yokan and Kuzukiri
Japanese summers are known for their sweltering heat, accompanied by the gentle chime of wind bells and the rhythmic song of cicadas. It’s during this hot season that the world of wagashi (Japanese sweets) showcases its ingenuity in creating refreshing treats. Let’s delve into Japan’s summer food culture, focusing on two iconic summer wagashi: mizu-yokan and kuzukiri.
Japanese Summer: Traditional Events and Seasonal Symbols
Tanabata, celebrated on July 7th, is a tradition that dates back to the Nara period when it was introduced from China. People write their wishes on small strips of paper and hang them on bamboo branches. This custom is still widely practiced by many Japanese today.
Fireworks festivals, another quintessential part of Japanese summers, have their roots in the Edo period. Originally meant to ward off evil spirits and diseases, they have now become a popular summer entertainment.
The gentle tinkling of wind chimes and the chorus of cicadas are also synonymous with Japanese summers. These sounds create a unique auditory experience of coolness, reflecting Japan’s distinctive culture that appreciates coolness not just visually, but aurally as well.
These summer symbols have greatly influenced the world of wagashi. Many sweets are created to represent Tanabata or to mimic the colorful bursts of fireworks, embodying the essence of the season.
Summer Wagashi: Experiencing the Seasons Through Japanese Confectionery
One of the defining features of Japanese wagashi culture is its expression of seasonality. Summer wagashi, in particular, are crafted with ingenious methods to provide a sense of coolness.
Visually, designs often incorporate motifs of water droplets or ripples. Cool colors like blue and green are frequently used to give an impression of refreshment.
In terms of texture, wagashi that melt smoothly in the mouth, like mizu-yokan, or those with a pleasant, slippery texture, like kuzukiri, are popular. These are believed to have a cooling effect on the body during hot summer days.
The choice of ingredients is also crucial. Agar and kudzu starch, which set well when chilled, are used to create wagashi that can be served cold. These ingredients not only contribute to the taste but are also rich in dietary fiber and minerals, offering potential health benefits. For more details on the main ingredients of wagashi and their effects, you can read this article. Summer fruits like watermelon and melon are also used to create seasonal wagashi.
In this way, summer wagashi express “coolness” in every aspect, not just in taste. This reflects the Japanese sensitivity to subtle seasonal changes and the culture’s emphasis on harmony with nature.
Mizu-Yokan: A Crystal of Cool Sweetness
Mizu-yokan is arguably the quintessential summer wagashi. Its translucent appearance and melt-in-your-mouth texture make it perfectly suited for summer.
The history of mizu-yokan dates back to the late Edo period. Initially a luxury item, it became more widely available during the Meiji era as manufacturing methods improved.
The main ingredients of mizu-yokan are azuki beans, sugar, and agar. It contains more water and less agar than regular yokan, resulting in a soft and smooth texture. Agar is also recognized as a Japanese “superfood,” and you can read more about its details in this article.
The production process involves cooking and straining azuki beans, adding sugar, then setting the mixture with agar and chilling it. While the method might seem simple, it requires great skill to balance the water content, agar amount, and chilling process perfectly.
The appeal of mizu-yokan lies in its refreshing quality. When chilled, it offers a cool sweetness perfect for hot summer days. The dietary fiber in agar is also said to be gentle on the stomach, which can be sensitive during summer heat. Mizu-yokan is also lower in calories and carbohydrates compared to other wagashi, making it a suitable treat even for those watching their diet.

Kuzukiri: Transparent Beauty with a Smooth Texture
Kuzukiri is another staple of summer wagashi. Its transparent beauty and smooth, slippery texture make it ideal for hot summer days.
The origins of kuzukiri can be traced back to the Heian period, though it was initially used as medicine. It became popular as a food during the Edo period.
The main ingredients of kuzukiri are kudzu starch and sugar. Kudzu starch, derived from the root of the kudzu plant, provides a unique transparency and elasticity. Kudzu is also known as a hidden Japanese superfood, and you can read more about its details and health benefits in this article.
To make kuzukiri, kudzu starch and sugar are dissolved in water, then cooked in a pot. The mixture is poured into a mold, chilled until set, then cut into thin strips.
The charm of kuzukiri lies in its texture. Its smooth, slippery feel provides a sense of coolness in the hot summer. Its transparent, cool appearance is also part of its appeal as a summer wagashi.
Kudzu starch is said to aid digestion, making kuzukiri easy to eat even when summer heat has reduced one’s appetite.

Enjoying Summer Wagashi: The Appeal as Tea Sweets
While mizu-yokan and kuzukiri can be enjoyed on their own, they are traditionally paired with Japanese tea. In summer, combining them with cold tea enhances the feeling of refreshment.
Eating mizu-yokan with cold green tea or barley tea creates a harmonious blend of tea fragrance and sweet flavor in your mouth. For example, cold sencha tea’s crisp flavor enhances the sweetness of mizu-yokan, while the toasty aroma of barley tea pairs perfectly with kuzukiri topped with kuromitsu (brown sugar syrup) and kinako (roasted soybean flour).
These wagashi are also visually refreshing, allowing you to feel coolness through both your eyes and taste buds on a hot summer day. Enjoying these sweets in a tea room or on an engawa (veranda), listening to the sound of wind chimes, is truly one of the quintessential pleasures of Japanese summer.
Conclusion: What Summer Wagashi Teaches Us
Through mizu-yokan and kuzukiri, we hope you’ve gained an appreciation for the depth of Japanese food culture and the importance of seasonality. These wagashi express not just sweetness, but also visual and tactile sensations, even embodying the symbols of Japanese summer.
Japanese wagashi culture teaches us to cherish the changing of seasons and to enjoy each season with all five senses. Summer wagashi, in particular, represent the Japanese sensibility of finding coolness even in the midst of heat.
This summer, why not try savoring mizu-yokan or kuzukiri while reflecting on Japanese summer and wagashi culture? You’re sure to discover new insights and enjoy a refreshing moment.