To provide a new seasoning composition including a functional seasoning composition containing a non-calorie or low-calorie natural and/or artificial highly effective sweetener, and also improving the taste of the seasoning composition containing a non-calorie or low-calorie natural and/or artificial highly effective sweetener by giving taste further similar to sugar, to provide a method for producing and using the seasoning composition, and to provide a method for improving the taste of the seasoning composition.

This seasoning composition includes a seasoning base, at least one highly effective sweetener, and at least one sweetness improving composition. The seasoning base is mustard seed, the highly effective sweetener is rebaudioside A, and the sweetness improving composition is carbohydrate, polyol or amino acid.