Use an electric mixer on high speed to beat for 2 minutes.

Add sifted all-purpose flour and baking powder, and gently mix with a spoon until combined.

Line the inner pot of a rice cooker with parchment paper and grease it. Pour the batter into the pot and smooth the top. Add 1.5 cups of water (using a rice measuring cup) to the outer pot and steam. If using a stovetop, steam for 20 minutes.

Remove from the pot.