An object of the present invention is to provide a sponge cake that does not become concave-shaped in the center even when it uses a fructooligosaccharide having physiological functions, such as decay resistance, the effect of prompting bifidobacterium growth, the effect of improving the metabolism of lipids such as cholesterol, the effect of regulating immunity, and the effect of inhibiting a rise in blood sugar level. According to the present invention, there is provided a sponge cake comprising a saccharide comprising a fructooligosaccharide, and a water-soluble polymer selected from the group consisting of collagen peptide, xanthan gum, and guar gum.
