"I do dabble in chemistry here and there," Roy says with a chuckle. "I had to know at least a little to work safely with pyrotechnics."

"You could buy some easily and for a reasonable price. I don't think it would be in grocery stores but online they likely sell food grade that has all ready been ground up. It's used for a number of things, not just food, so large quantities are harvested. It's actually sap from acacia trees, put simply." He won't bore her with talk about polysaccharides and glycoproteins.