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The Sudachi (Citrus sudachi) belongs to Rutaceae (the Citrus family). It is an evergreen shrub that is native to Japan and is a closely related species of "Yuzu" (Citrus junos). It has been used as edible vinegar for a long time, and its etymology is "Su-tachibana" (vinegar tachibana)". The main production area is Tokushima Prefecture, but it seems that there is a log in the back mountain of Oo-asahiko Shrine in Naruto City. From May to June, white five-petaled flowers bloom on the axils of the branches. The fruits ripen orange-yellow in winter, but when used as a flavoring, the green ones are harvested from August to September.
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