Learn About Peace Through Suiton Day

What Is "Learn About Peace Through Suiton" Day?

Every August 15th is also "Learn About Peace Through Suiton Day" (すいとんで平和を学ぶ日) in Japan. It was established by the "Suiton no Kai" (Suiton Group), a grassroots peace group in Inuyama, Aichi Prefecture, and is registered with the Japan Anniversary Association. The group chose August 15th because the end of the war in 1945 also marked the beginning of the peace that continues today. August 15th is Japan's End of War Commemoration Day, and suiton (すいとん) — a simple dumpling soup made from wheat flour dumplings in a thin broth — was one of the most widely eaten "substitute foods" (代用食, daiyō shoku) during WWII's final years and the immediate postwar period, when rice was severely rationed and many Japanese subsisted on what little could be obtained. Eating suiton on August 15th connects the commemoration of war's end with a physical reminder of wartime hardship.

Suiton and Wartime Food

Suiton itself has a long history -- the characters for "suiton" (水団) already appear in Muromachi-period writings, and from the Edo period until before the war there were suiton stalls and specialty shops. As Japan's war situation deteriorated, food shortages became severe. Rice — Japan's staple — was increasingly unavailable to civilians as military requisitions took priority. "Substitute foods" such as suiton and other improvised dishes became the daily reality for many Japanese families. Even wheat flour ran short, so wartime suiton was sometimes made with soybean flour, corn flour or rice bran mixed in, and with little stock, seasoning or other ingredients, it was often just dumplings in a thin broth. It was common enough that it represents the taste of wartime deprivation for surviving generations.

The Meaning of Eating Suiton Today

The Suiton no Kai tells children about the horrors of war and shares suiton with them while talking about wartime food shortages, keeping the memory of wartime hardship alive — particularly among younger generations who have no personal experience of food deprivation. Eating this simple food on Japan's most solemn peace commemoration day creates a physical connection between historical memory and present experience.

Food and Memory

The use of food as a medium of historical memory — eating specific foods on specific commemorative occasions to physically embody historical experience — is a profound practice found across cultures. In Japan, the connection between suiton and wartime hardship makes eating it on August 15th an act of embodied remembrance that goes beyond intellectual acknowledgment.

Fun Facts

• Wartime recipe books: Wartime Japan produced extensive recipe books for substitute foods — government-issued guides to making palatable meals from unusual ingredients. These publications are now historical documents of wartime civilian experience.
• Regional variations: Suiton exists in various regional forms across Japan — some areas add miso, others use different vegetables or seasonings — reflecting the adaptations made from whatever local ingredients were available during wartime scarcity.