Mikos (Shinto shrine maidens) are treating visitors "Omiki".
Omiki is Sake (Rice wine. Japanese liquor) what offered for "Kami" (Japanese Shinto's Gods and Goddes). And Shinto events like new year's visiting, Omiki treat for visitors.



[Miko] (Shinto shrine maiden)
From Wikipedia. ( [en.wikipedia.org] )

Miko are young women in the service of Shinto shrines of Japan.

The Miko tradition dates back to the ancient eras of Japan. In ancient times, women who went into trances and conveyed prophecy or the words of god were called Miko, not unlike the Oracle at Delphi of ancient Greece.

Later, miko were young female attendants at Shinto shrines and temples. They were often the daughter(s) of the priest who presided over a given shrine. Roles of the miko included performing in ceremonial dances (miko-mai) and assisting priests in various ceremonies, especially weddings. The tradition continues and today miko can be found at many Shinto shrines. In modern times most Miko are part-time employees or volunteers. Their duties include assisting with shrine functions, performing ceremonial dances, offering Omikuji (a type of fortune telling), and staffing shrine shops.

It is somewhat difficult to assign a strict definition or English equivalent to the Japanese word "Miko", though "shrine maiden" is most often used. Other terms that have been used as equivalents are Prophet, Medium, Priestess, Nun, witch, or Sorceress. It should be noted that although Shinto has female priests - the term "priestess" is not used in Shinto - they are not the same as miko. It is also important to note that miko do not have the same degree of authority as that of an actual priest, although they can serve as the senior cleric of a shrine if no priest is available. The unique exception to this is that in ancient times, the prophecy revealed by Miko was considered to be handed down directly from Kami (God).

Supposedly miko were virgins, though it is unverifiable if this was true. It is probably true that when a woman who was serving as a miko married she abandoned her duties at the shrine in order to be with her husband and new family. This rule has since been mostly removed in modern times, though most still leave the service of the shrine or train for the priesthood should they wed.

The traditional costume or dress of a miko is a chihaya, which consists of a scarlet red hakama, either pants or a skirt; a white kimono shirt with swinging sleeves (and oftentimes red trim); and tabi. Occasionally, some shrines, such as the Tsurugaoka Hachiman Shrine in Kamakura, dress their miko in other colors. It is also common for Miko to wear hair ribbons or ornaments, usually colored either red or white.

etc...