Line a half-sheet pan with parchment paper. Place the superfine sugar in a small bowl.
In a medium saucepan, stir together 1 cup of water with the sugar, then add the cinnamon stick. Bring the mixture to a boil over medium-high heat and stir until the sugar is completely dissolved. Remove from the heat and pour into a heatproof, wide-mouthed bowl. Let the liquid cool for a few minutes, then remove the cinnamon stick.
Drop the cranberries in the syrup and stir to coat the cranberries completely. Remove the cranberries, a few at a time, with a slotted spoon (tap the spoon to release excess syrup) and drop them in the superfine sugar. Toss the cranberries in the sugar to coat completely, and place on the parchment paper to dry. Repeat the above process with the rosemary. Decorate “the Stump” at will.