To provide a novel seasoning oil capable of imparting excellent burning flavor having cooking feeling to a food product as a fish system flavor and its manufacturing method, and a liquid seasoning using the seasoning oil.SOLUTION: The present seasoning oil is a seasoning oil capable of imparting a fish-based flavor to food products, and contains at least one flavor component selected from aldehyde-based flavor components and furan-based flavor components, 2-methyl butanal as the aldehyde flavor components, and 2-ethyl furan as a furan-based flavor component, and concentration of the flavor component is 10 to 200,000 micro g/kg. The present manufacturing method comprises a heating step of heating both a dried fish matter and a base oil to a temperature of 50 degrees centigrade or higher to obtain an extracted oil. The liquid seasoning contains the seasoning oil. The method for producing the present food product includes a step (i) of adding...

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