The History of Wagashi: From Tang China to Edo-Period Sugar
Wagashi’s story starts well before the word itself existed, and it doesn’t begin with something sweet. It begins with a fried, imported offering meant for gods and temples, not people.
Before wagashi had a name: karagashi
During the Nara period (710 to 794), Japan sent kentoshi, diplomatic missions, to Tang-dynasty China roughly every twenty years, and among what those missions brought back were karagashi (唐菓子, “Tang confections”), made from kneaded rice, wheat, soybean, and azuki flour, sweetened with miso, and fried in oil. That last detail is genuinely different from most wagashi today, which is boiled or steamed rather than fried. Karagashi wasn’t originally an everyday treat either; it was used as an offering at Shinto shrines and Buddhist temples, only later becoming a fixture at aristocratic banquets during the Heian period that followed. Karagashi didn’t stay confined to history books: our guide to Kyoto’s kyo-gashi tradition covers a Kyoto shop still making a version of it today, unbroken, at a single surviving location.
Heian and Kamakura: literature and Zen
By the Heian period, native confections had entered the picture alongside Chinese imports, most famously tsubaki mochi, wagashi’s oldest documented form; our guide to what wagashi is covers its literary appearances in full. A few centuries later, during the Kamakura period, Zen Buddhist monks reshaped a Chinese savory dish into what became anko, substituting azuki beans for meat under Buddhist dietary practice; our guide to anko covers that story in depth. Both threads, literary and religious, run through wagashi’s development for centuries before the ingredient that finally made it recognizably sweet became widely available.
The Edo-period sugar boom
Satsuma domain, controlling sugarcane cultivation on Amami Oshima from around 1610, was the country’s main sugar source through most of the Edo period, though that production came at real human cost: in the 1820s and 1830s, Satsuma officials forced Amami islanders to convert rice paddies into sugarcane fields. Separately, and more directly tied to wagashi quality specifically, a Sanuki (modern Shikoku) retainer named Hiraga Gennai, better known as a polymath inventor and scholar, learned sugar production methods from Satsuma and adapted them to Sanuki’s own climate, developing wasanbon. Its production process, called togi, hand-kneads crushed raw sugar with water, then presses it in a wooden box to squeeze out molasses, repeated three to five times to produce unusually fine, quickly dissolving particles, still considered the premium sugar choice for high-end wagashi today. Much of that high-end tradition developed specifically alongside tea ceremony culture; our guide to wagashi and the tea ceremony covers how the two grew up together.
Frequently asked questions
What was the earliest form of wagashi?
Karagashi, a fried confection imported from Tang-dynasty China during the Nara period via diplomatic missions. It was originally used as a shrine and temple offering, not an everyday treat, and predates the word "wagashi" itself by well over a thousand years.
Was early wagashi fried or boiled?
The earliest form, karagashi, was fried in oil, genuinely different from most wagashi today, which is typically boiled or steamed.
When did sugar become widely available in Japan?
Not until the 18th century. Shogun Tokugawa Yoshimune promoted domestic sugar production in the early 1700s specifically to reduce a trade deficit from importing it, and by 1800, Japan was producing more sugar than it imported.
What is wasanbon?
A fine, hand-crafted sugar developed in Sanuki (modern Shikoku) by Hiraga Gennai, who adapted sugar production techniques learned from Satsuma to his home region. It's still considered the premium sugar choice for high-end wagashi today.
Did sugar production in Edo-period Japan have a difficult history?
Yes. Satsuma domain controlled sugarcane cultivation on Amami Oshima for most of the Edo period, and in the 1820s and 1830s, Satsuma officials forced Amami islanders to convert their rice paddies into sugarcane fields.
The short version
Wagashi’s history starts with karagashi, a fried Tang-dynasty import used as a temple offering during the Nara period, long before the word “wagashi” existed. Native confections like tsubaki mochi and the Buddhist reworking of anko developed over the following centuries, but wagashi couldn’t become widely sweet until sugar itself became available, which didn’t happen until shogun Tokugawa Yoshimune’s 18th-century push for domestic production turned Japan into a sugar exporter’s equal by 1800. Wasanbon, the fine sugar developed by Hiraga Gennai in Sanuki, remains the premium choice for high-end wagashi today, a direct legacy of that same economic shift.