The present invention is capable of whitening the foam head of a beer-taste beverage containing a colorant. According to the present invention, more specifically, saponin is added to a beer-taste beverage that contains a colorant.本發明係關於將含有色素之啤酒風味飲料的泡沫白色化。具體上係使含有色素之啤酒風味飲料含有皂甘。