PROBLEM TO BE SOLVED: To provide a method for imparting a long-lasting flavor to food products.SOLUTION: A method for imparting a long-lasting flavor includes adding an oil in water type liquid emulsion composition containing a flavor material and oil droplets having an average particle diameter of 1.2 μm or more and 80 μm or less to food products. The emulsion composition has an oil phase component less than 10% (v/v) relative to the total amount of the food product. In each of the cases of a flavor material having a logP value of the following (1) to (3), the average particle diameter of the oil droplets and/or the amount of the oil phase component further satisfy the following requirements. (1) In the case of a flavor material having a logP value less than 1, the oil droplets have an average particle diameter of 15 μm or more and/or the oil phase component content is 0.05% (v/v) or more relative to the total amount of the food product. (2) In the case of a flavor material having a logP value of 1
