Pieter said:
Thank you for all the replies! Does somebody know al the ingredients and how it is made (I love recipes!)? I accept that it does not need any additional preparation and can be eaten as it comes form the package?
Namayatsuhashi is made of rice flour (two different kinds), sugar, and water, all mixed and steamd. Also cinnamon is added.
*Edit: the one you got is from a shop called ヒ?、窶懌?コ窶敖ェ窶ケ'窶怒窶「テ? and its website says they also use kinako (soy bean powder).
http://www.yatsuhashi.co.jp/introduction/seiho.html
First it used to sold only baked (which was called "yatsuhashi"), it is rather had and crunchy but later someone started to sell it without baking, which is very soft and a bit chewy. "Nama" of "namayatsuhashi" means "raw".
http://www.shogoin.co.jp/pro.html
Top left is yatsuhashi in the original style.
Top right is smaller piece, sugar coated.
Second from the top, the left one is namayatsuhashi you've got, the right one is with "an" (azuki bean paste) in it.
You can eat namayatsuhashi as it is, no need to cook, it has nice flavour of cinnamon and its texture might be interesting for you, surely something quite new?
Enjoy Japanese sweets!