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Japanese
On the winter solstice (tōji), Japanese people bathe in water floating with whole yuzu fruits — a ritual said to ward off colds and bring fortune for the new year.
- Tang Dynasty cultural exchange — China → Japan via Korea (7th–8th century AD)
- Heian period Japan Medicinal and ceremonial fruit; skin poultices and ritual baths
- Edo period Yuzuyu (yuzu bath) on winter solstice for good health; dried peel in ponzu
- Meiji–Showa era Artisanal yuzu kosho condiment perfected in Kyushu
- Modern era Global luxury citrus; chefs prize its floral complexity over lemon or lime