It was pre-released for digital download and streaming on December 3, 2021, by Warner Music Japan as a single from their fourth Japanese studio album, Celebrate.

The single and its B-side, "Wonderful Day", were physically released on December 15 in Japan.

[2] The lyrics, written by Lauren Kaori, are about "the hole left in your heart when you're missing a special person".

On October 15, 2021, shortly after the release of their first English single, "The Feels", and the announcement of their third Korean studio album, Formula of Love: O+T=<3, Twice's agency JYP Entertainment announced through a winter-themed teaser that the group would be releasing their ninth Japanese single, "Doughnut", on December 15.

[8][9] On December 15, the group held an online event to commemorate the release of the single, where they performed "Doughnut" and its B-side "Wonderful Day".