PURPOSE: To obtain the titled food or drink having natural and balanced taste and flavor of fermented material containing diacetyl, by adding a specific amount of fermented butter milk as a solid milk component.

CONSTITUTION: The objective food or drink (excluding margarine) can be produced by adding fermented butter milk which is a by-product of fermented butter production process. The amount of the fermented butter milk is adjusted to give a solid milk content of 0.1W3wt% based on the sum of oil or fat component and water. The water-content of the food or drink is ≥70wt%, and the solid milk component of the fermented butter milk is preferably 0.1W0.8wt% based on the sum of oil or fat component and water.