SpringMom, 10-4 on the toxicity. S
omeone can correct me if I am wrong, but I believe that if the flavor of the wintergreen is reasonable (ie. less strong than chewing a piece of wintergreen gum, which uses methyl salicylate as flavoring) it's probably fine. Where the problem comes in is if I were to over-dose the soda in such a way that the concentration of methyl salicylate would be so strong that it would make anything even resembling root beer...perhaps a mouthful of Bengay?
I would think that using a handful of fresh wintergreen leaves would be pretty safe...? I mean, they used to make tea out of it...but then, they also used to make sassafras tea...
Also, I'm not ruling out the Pappy's extract, I'd just rather find a combination of raw ingredients other than sassafras that works.
Shooter, yeah, I just want to make a straight wintergreen soda for experimental purposes. I have single flavor sodas of each of the other flavors, so as I'm developing the recipe, I can more easily recognize which flavor component needs to be adjusted.
It also helps me set a benchmark for single ingredient proportion. For example, the sassafras soda that I made was WAY too strong, whereas most of the others were pretty close to ideal. Now I have a benchmark for how much of each component to add.