Sweetener was a substance that could be added to a meal or liquid to make it taste sweeter. Merei Spanjaf once added sweetener to a cup of caf that was otherwise bitter to try to give some taste to it. Zare Leonis once lamented not adding more sweetener to a bowl of porridge while eating at the Arkanis Academy.
- Servants of the Empire: Rebel in the Ranks (First appearance)
- Servants of the Empire: The Secret Academy (Mentioned only)