"For example, in Crunch bars, a natural vanilla flavor will replace artificial vanilla used now."
That sounds all well and good. But I found out recently that the "natural vanilla flavor" that I look for when buying - is NOT vanilla from vanilla beans! That is called "vanilla". When you see "natural vanilla flavor" - it is actually something they squeeze from a beaver's anal glands!!!!!!!!!!!!!!!!!!! Yes, let that settle in. Anal glands!
But hey, it is natural.