In a mixing bowl, combine sweet rice flour, sugar, and room temperature water, stirring until smooth and lump-free.

Pour the mochi mixture into a steamer lined with parchment paper and steam over medium heat for 20 to 25 minutes.

Once steamed, carefully remove the dough from the steamer and let it cool for 10 to 15 minutes.

Dust your hands and working surface with cornstarch, take a piece of dough, flatten it, and place a peach slice in the center.

Wrap the dough around the peach and seal the edges tightly.

Roll each mochi piece in cornstarch to keep from sticking and place in an airtight container.

Refrigerate for at least 30 minutes before serving.