I stumbled onto this in lazy desperation (probably I could have tracked down confectioner's sugar somewhere in Santiago when I needed it, but checking two places is just about my limit for anything). So I read somewhere about blending or grinding regular sugar with tapioca flour. And then I went for just the sugar, and I used my coffee bean grinder, and wow, it's perfect! Just sugar in a coffee grinder for a few seconds does it. My favorite part is that I can use natural unrefined sugar to make it. I mean how high-end does that sound, right? Unrefined confectioner's sugar. I'm sure it would cost a fortune. While here, in the D.R., it's actually cheaper to buy unrefined sugar, called azรบcar crema.
