[PROBLEM] TO PROVIDE A METHOD OF PRODUCING A FLAVOR COMPOSITION BY UTILIZING A HEATING REACTION OF METHIONINE AND A SUGAR, WHICH ENABLES TO CONTAIN METHIONAL AT A HIGHER CONCENTRATION, AND A FOOD ETC.CONTAINING A COMPOSITION PRODUCED BY THE PRODUCTION METHOD.[SOLVING MEANS] METHIONINE AND A SUGAR ARE MIXED, AND THE MIXTURE IS HEATED UNDER TWO STAGE PH CONDITIONS FOR A PARTICULAR TIME AT A PARTICULAR TEMPERATURE. MOREOVER, DURING MIXING AND HEATING METHIONINE AND A SUGAR, ONE OR MORE KINDS OF SODIUM CHLORIDE, POTASSIUM CHLORIDE, CALCIUM CHLORIDE AND PHOSPHATE IS/ARE ADDED, AND THE MIXTURE IS HEATED UNDER PARTICULAR pH CONDITIONS FOR A PARTICULAR TINE AT A PARTICULAR TEMPERATURE.