The label said there was just a pinch of potato powder, so it might just be label ap-peelAs a person from Idaho and has lost a tug of war over a pit of mashed potatoes (my hometown has a big spud day festival and that was an activity).
This would be interesting to try. Potato tends to leave a filmy slimy residue on the skin and I wonder how or if it would be changed in saponification.
