What is this organic vegetable glycerine you keep going on about? And this hooves and other animal parts malarkey?
Veg extracted and extracted from other sources are exactly the same chemical makeup. The only differences will be the impurities in it which is oh about 0.2% max if we talking BP or USP rated products. Which is what is recommended. Funnily enough there is a certain seed extracted glycerine which should not be used for vaping because of what the impurity is made up of. It needs a few extra chemical processes. But then I'm almost sure that one is not BP or USP rated.