It is rare in Japan, even rarer elsewhere. It is considered a variant of the Sudachi but it is closer to a tangerine in size and matures later than a Sudachi. It is also sometimes called a sumikan or sour mandarin.
The southern Portuguese climate suits it perfectly because it requires a lot of sun, this fruit, used when green, we extract our naoshichi essetial oil directly from our trees, 
 
Naoshichi essential oil, reminiscent of Sudachi yet with a refined twist, whilst sharing Sudachi's lively citrus notes, Naoshichi offers a subtler, gentler profile, with just a hint of bitterness adding depth to its aroma.
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