[Summary][Problem] Provision of a method of imparting aroma or flavor to food.[Solving Means]An aroma or flavor-imparting composition containing methional, dienals and thiazoles in proportions satisfying 0≤A≤100, 0≤B≤100, 0≤C≤60 and A+B+C=100 wherein A shows parts by weight of niethional, B shows parts by weight of dienals and C shows parts by weight of thiazoles.