The Log That Still Smells: Ranjatai and the Wood Called Kyara

In the autumn of 2025 the Nara National Museum showed a log for the first time in fourteen years: more than one and a half metres of agarwood, 11.6 kilograms of golden resinous wood under a dark skin, hollowed out and scarred at thirty-eight places where pieces were cut away. Paper tags sit at the three largest. However hard a visitor sniffed in front of it, the log gave nothing back.

Rikiya Nakamura heads conservation at the Shosoin, the imperial treasure house that keeps the log. Up close, he says, the wood still smells faintly. "None of the other treasures retains any scent." A scent that needs no heat is what kyara is prized for: the finest grade of agarwood can be smelled at room temperature. Popular writing calls this log kyara. Its keepers file it under another name, and in 2025 a radiocarbon date gave it an age its legend cannot comfortably hold.

A temple hidden in the name

On the Shosoin's books the log is Ojukuko, yellow ripe incense: a huge piece of jinko, as agarwood is called in Japan, thought to come from the mountains that run from Vietnam into Laos. The name is a plain description. Yoneda Kaisuke, who analysed the wood for the Shosoin, wrote in 2000 that it is yellow and has not turned black, yet holds aromatic matter enough to serve fully as incense.

Ranjatai, the name everyone else uses, is a game: its three characters hide the three of Todai-ji, the temple of the Great Buddha, most likely a piece of the wordplay fashionable in the Muromachi period. By the Edo period devotees of the Japanese way of incense kept a list of sixty-one famous woods, with Ranjatai on it under the name Todai-ji. Kyara comes from kalaguru, Sanskrit for black agarwood; the most famous wood in Japanese incense is named for being yellow.

Many books describe the great cavity in the log as rot. Yoneda read it as work. Wood where no resin has settled gives off unwanted smells when it burns, so the suppliers trimmed the resinless heart away and left the hollow.

A warlord's tea and an emperor's smoke

The Shosoin's doors open only with the Emperor's permission. In 1465 the shogun Ashikaga Yoshimasa had two pieces about an inch square cut, as the shoguns Yoshimitsu and Yoshinori had before him. Oda Nobunaga went further. In the spring of 1574 the doors were opened for him, the first time since the Ashikaga shogunate fell, and he had the log carried out to his own Tamonyama Castle in Nara and sawn there in front of three monks of Todai-ji. One piece went to Emperor Ogimachi. Days later, at a tea gathering in Kyoto, he handed pieces to the tea masters Sen no Rikyu and Tsuda Sogyu.

In 1877 Emperor Meiji had a fragment of 8.9 grams trimmed off and split in two, one half to keep and one to burn. He burned that half in his lodging in Nara, and the imperial record says "fragrant smoke filled the palace". The paper tags at the three largest cuts, for Yoshimasa, Nobunaga and Meiji himself, were all added in his reign. The log is thought to have been cut more than fifty times, and who made most of those cuts nobody knows.

The tree was still growing

The best-known story gives the log a royal start: tribute from the Tang court to Emperor Shomu, given to the Shosoin by Empress Komyo when he died in 756. Another version has it dedicated to Todai-ji when the Great Buddha's eyes were opened in 752.

On 8 July 2025 the Shosoin Office announced a radiocarbon date: the log's tree was felled, or fell, around 772 to 885. The 752 dedication does not fit those dates, and the gift to Shomu sits awkwardly with them, since a tree still growing in Southeast Asia in the late eighth century had very likely not reached Japan by the time the Shosoin was founded. How and when the log came in, the Office said, had become more of a mystery. Long before any laboratory, the Shosoin director Wada Gun'ichi had searched the treasury's documents and found no evidence of an eighth-century gift. The oldest record that may mention the log dates from 1193.

Fifteen taels in Hoi An, six hundred in Nagasaki

The tree does not grow in Japan, so the wood came by ship. Centuries later, once the lord Nguyen Hoang held central Vietnam, he encouraged trade with China and Japan, and calambac, ky nam in Vietnamese, left with the other agarwood. A pound bought in Hoi An for fifteen taels could be sold in Nagasaki for six hundred, and the Nguyen lords made calambac a royal monopoly that helped fund their state.

Shavings and smoke

Ensar, the maker behind Ensar Oud, sides with the Chinese kyara masters, who have found kyara-grade wood in Brunei, Cambodia, Hainan, Laos and beyond, against the Japanese school's old insistence on Vietnam, and he ranks true Brunei kyara above Vietnamese for rarity. Kyara de Kalbar is an oil distilled from Brunei kynam shavings. His kyara master finished it, and Ensar remembers the moment: kyara carving dust warming on the master's low-heat burner, green kyara powder dissolving under his own tongue.

The perfume of the same name holds that oil, beside a vintage sinking-grade Kelantan distillation. In the oil, orris and wild fig move through deep Bruneian resin, and blackcurrant and dark grape give it body without ever going to jam. Under it all runs a faint bitter edge, typical of high-grade kyara, and there is no smoke in it.

Elixir Attar, which spells the wood kinam where Ensar writes kynam, takes a different view: nobody has ever distilled pure kinam wood into agarwood oil, and oils sold as kinam smell of it only because they share some of its compounds. For Elixir, plantation kinam gives off only part of what the natural wood does when it burns, and the burning is the point: kinam is prized for the smell of its smoke. So Elixir rebuilt the smoke.

Elixir isolated compounds from several kinam and sinking-grade woods and captured the smoke of green-soil kinam wood for the top, then matched the result to real kinam smoke and added nothing else. It opens dense and cool: a bitter smoke with a faint menthol in it and something oily and medicinal at the edge. Later it turns resinous and slightly sweet, with a nutty, almond-like note over damp green soil, then warms toward honey and hay, like a burner cooling down.

Lost Tribe, which makes its perfumes from natural ingredients only, went by weight: every bottle of Prince of Persia holds at least a full gram of Black Thai Kinam Oud 2011, a dark, resinous oil.

Two rose ottos open it, a red-wine Georgian rose and a creamy white one, with white pepper to warm them, and the middle runs clean and almost mineral through blue cypress and Port Oxford cedar. The kinam lies in the base, velvety and balsamic, with an incense-like gravity, over civet, Mongolian musk and Mysore sandalwood.

Learned by heart

The Nara showing closed on 10 November 2025, and a treasure once shown is rested for at least ten years. Nakamura says the log's scent is being lost little by little. To pass it on, the Shosoin had perfumers smell the log and commit it to memory, and from that memory they built its scent again. At a separate show in Tokyo the copy stood in glass vessels, and visitors lifted them to smell what the log itself had kept from the crowd in Nara.

Frequently asked questions

What is kyara?

Kyara is the highest grade of agarwood in Japan, where agarwood is called jinko, and it has long been judged as a group apart from ordinary jinko. In Chinese the top grade is called qinan. It is prized for a fragrance you can smell at room temperature, before any heat touches it.

Is Ranjatai kyara?

The Shosoin in Nara, which keeps the log, catalogues it as Ojukuko, a huge piece of jinko thought to come from the mountains running from Vietnam into Laos, and Ranjatai is its popular name. Popular writing often calls it kyara, while its official name means yellow ripe incense.

How old is Ranjatai?

Radiocarbon dating announced by the Shosoin Office in July 2025 showed that its tree was felled, or fell, around 772 to 885. That sits awkwardly with the legend of a gift to Emperor Shomu, who died in 756, and the oldest record that may mention the log dates from 1193.

Can kyara be distilled into an oil?

Two oud houses disagree. At Ensar Oud the Kyara de Kalbar oil was distilled from Brunei kynam shavings, while Elixir Attar holds that nobody has ever distilled pure kinam wood, and for Kinam Kodo it rebuilt kinam smoke instead.