A sweetener composition with a compound represented by formula (b) in (I) (a) and stevia, based on the total weight of the sweetener composition, the compound of formula (I) is at least 0 I is present in an amount of 0.0001% by weight. The compound, soften the flavor of licorice due to stevia.(a)ステビア、および(b)式(I)で示される化合物を有する甘味料組成物であって、式(I)で示される化合物は、甘味料組成物の全質量に対して、少なくとも0.0001質量%の量で存在する。該化合物は、ステビアに伴う甘草の風味を和らげる。