Sugar is a condiment that is used by both humans and Smurfs.
Empath: The Luckiest Smurf stories[]
In the EMPATH: The Luckiest Smurf story series, sugar is used for cooking, baking, and sweetening foods. It can take either the regular granulated form or a powdered form that is normally sprinkled on top of baked foods. Hypertine is a sugar substitute that acts as a combination of natural sugar and caffeine, and thus is used very sparingly.
Though Psyches are generally allergic to sugar, Papa Smurf was able to use low-dosage sugar pills as a placebo to wean Polaris from his addictive need for psychelium to control his emotions.
In "Empath And The Red-Nosed Reindeer", Nicholas feeds his reindeer magic sugar cubes that enable them to fly.
Hero: The Guardian Smurf stories[]
In the HERO: The Guardian Smurf story series, sugar is used for cooking, baking, and sweetening foods.