Put a steamer in a pot with water over high heat

Add <quantity>90<unit>g</unit></quantity> of glutinous rice flour to a bowl. Add <quantity>90<unit>ml</unit></quantity> of water gradually, stirring in between, until the dough no longer sticks

Add <quantity>40<unit>g</unit></quantity> of powdered sugar and mix until it develops a creamy consistency

Put the bowl in the steamer and cover it for 5m until the dough softens

Remove from the steamer and stir

Put the bowl back in the steamer for 5m to warm the dough. Remove from the steamer and pound the dough until it begins to become elastic

Place the bowl back in the steamer for 5m to warm the dough. Remove from the steamer and pound the dough vigorously until it is smooth and elastic

Cover a work surface with tapioca starch and place the mochi dough on it

Dust your hands with the starch and divide the dough while it is still warm. Flatten the pieces gently with your fingers. The mochi dough is ready

Fill it with your favorite stuffing