And the winner is...

First of all, thanks for everyone who participated and guessed, what fruit it was in the pic! I know it wasn't easy one. I've never seen it before, and I have no idea what to do with it! 

But some of you made some good researches and got it right! Well done!

So it is...

Buddha Hand!

This is what Wikipedia says... 

Buddha's hand fruit is very fragrant and is used predominantly by the Chinese and Japanese for perfuming rooms and personal items, such as clothing.

The fruit may be given as a religious offering in Buddhist temples. According to tradition, Buddha prefers the "fingers" of the fruit to be in a position where they resemble a closed rather than open hand, as closed hands symbolize to Buddha the act of prayer.

[edit]Culinary

The peel of the fruit can be candied into succade. In Western cooking, it is often used for its zest. The inner white pith is not bitter as is usually the case with citrus, so the fingers may be cut off and then longitudinally sliced, peel, pith, and all, and used in salads or scattered over cooked foods such as fish.^[4
]

And the lucky winner is Henna!

Pakko osallistua tähän kilpailuun. Onpas tosin hankala kysymys, koska en ole nähnyt tuollaista hedelmää aiemmin. Arvaan kuitenkin, että kyseessä on jonkinlainen sitruuna, sillä kanta näyttää sitruunalta. Pitkällisen googletuksen seurauksena vastaukseksi löytyi: Buddha's hand citron. Suomennoksesta minulla ei ole tietoa :) on Today's Question?

Laitatko mulle meilina sun osoitteen niin saan kirjan postiin! Kiitos!