Erica Wisner wrote:
"I want to try making a fruit-juice-based Turkish delight eventually; not sure what to dust it with instead of powdered sugar."
depending on the flavour you can use: cocoa powder, nut meal, finely ground coconut, edible flowers (grind in spice mill), or edible rice paper. you could make an unsweet cookie/graham cracker and pulverize that and use the crumbs. you could also coat them with 90 or 100% cacao chocolate. any of these also work for truffles and other sticky little items which are rolled in sugar to keep them separate.