To specify expression timing of specific off-flavor, effectively mask the specific off-flavor, and provide an aroma component excellent in palatability in a simple way.SOLUTION: An aroma component search method capable of effectively masking a specific off-flavor of food and drink, comprises: measuring, after eating and drinking food and drink, a time when a specific off-flavour occurs by a sensory evaluation method; and measuring, after eating and drinking the above-mentioned food and drink or other food and drink, an amount of aroma components in the exhaled breath that passes from the oral cavity into the nasal cavity and is discharged from the nostrils.SELECTED DRAWING: None

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