The present invention addresses the problem of producing, without using seafood as raw materials, a food product flavor improving agent that imparts or strengthens a seafood cooking flavor and can be used to reproduce the seafood cooking flavor in a processed food, and providing a sufficient supply of the food product flavor improving agent, which has a natural flavor, a high titer and high quality. As a solution, the food product flavor improving agent that imparts or strengthens the seafood cooking flavor and can be used to reproduce the seafood cooking flavor in a processed food is produced by heat treating flavor improving agent production raw materials in which an aliphatic aldehyde compound, a thiol compound, an ammonia or amine compound, and sugar coexist, and provided. The present invention produces, using raw materials that do not use seafood, the food product flavor improving agent that imparts or strengthens the flavor when cooking seafood and moreover, provides a sufficient supply of the food product flavor improving agent, which has a natural flavor and high quality.本發明之課題在於:不使用魚介類作為原材料而製造能夠用以使魚介類之加熱調理風味再現於加工食品中的賦予或增強魚介類之加熱調理風味之食品風味改良劑,並且以充分之供給量提供作為風味自然、高效且高品質之食品風味改良劑。作為解決方法,係對使脂肪族醛類化合物、硫醇化合物、氨或胺類化合物及糖共存之風味改良劑製造原料進行加熱處理,而製造並提供能夠用以使魚介類之加熱調理風味再現於加工食品中的賦予或增強魚介類之加熱調理風味之食品風味改良劑。本發明利用不使用魚介類之原材料,製備賦予或增強加熱調理魚介類時之風味之食品風味改良劑,且以充分之供給量供給風味自然、高品質之食品風味改良劑。無
