A puffed grain flour food with high polyphenol content showing unsuppressed puffing is provided. A puffed grain flour food containing any of the following cacao compositions (a) to (d): (a) a cacao composition having a particle size distribution in the range of 10 μm to 1.5 mm and containing undisrupted cacao bean cells, (b) a cacao composition having a free fat content of 60% by weight or lower based on oil content, (c) a cacao composition containing 30% or more of undisrupted cacao bean cells in cacao bean cells, and (d) a cacao composition containing undisrupted cacao bean cells, which has a breaking strength of 3 kgf or lower.