[summary] [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 time at a particular temperature.