The present invention relates to an oil/fat composition that contains, as a flavor component, 1.88-752 ppm of δ-dodecalactone, 13.47-5,386 ppm of acetaldehyde, 0.1-39 ppm of methylbutanoate, and 0.04-16 ppm of heptanal in terms of the oil/fat composition. The oil/fat composition has a good butter flavor.