<human>: What is the best way to: What kind of sugar can you use to make royal icing?

OPTIONS:
- You can use granulated sugar to make royal icing. Make sure to avoid sifting the sugar to preserve the clumps.
- You can use powdered sugar to make royal icing. Make sure to sift the sugar first to remove the clumps.
<bot>: You can use powdered sugar to make royal icing. Make sure to sift the sugar first to remove the clumps.