一いっ献こん

noun

one cup of sake

Literally one cup of sake; often used in the context of offering or sharing a drink.

• まずは一いっ献こんいかがですか。

  How about a cup of sake to start with?

noun

a drink; small drinking party

By extension, refers to going out for a drink or treating someone to a drink; often implies a casual, small gathering over alcohol.

• 今こん夜や、一いっ献こん傾かたむけませんか。

  Shall we go for a drink tonight?

• 彼かれを一いっ献こんに誘さそった。

  I invited him out for a drink.