My mom says this one has a skin made out of rice flour and not the usual translucent tapioca flour. She seemed to hint at this being her preferred choice of flour as rice flour is apparently the more expensive of the two... Personally, I prefer skin made out of tapioca flour because of it's springy texture, plus the glassy appearance of the skin somewhat appeals to me. Also, unfortunately for this new-found discovery, the downside to this rice flour soon kueh was the hint of rice flour taste which I couldn't quite get used to!