The Shinto ritual of sharing sake with a kami is called naorai.
Naorai is the communal meal held after food and drink have been offered to the kami. Participants consume the offerings, creating a ritual sense of unity between humans and the divine. Sake, often called omiki when offered ritually, is one of the most common offerings.
Naorai is associated with shrine festivals and important ceremonies, including the imperial enthronement ceremony known as Daijōsai. It is broader than simply drinking sake: the rite can include eating rice, seafood, vegetables, mochi, and other foods first presented to the kami.
A common mix-up is confusing naorai with omiki. Omiki refers specifically to sacred sake or the act of drinking it, while naorai is the wider post-offering feast or communion. The related term shinsen means the food and drink offered to a shrine or household altar.