In reply to LeeWood:
> Commercially I've never seen a product sweetened exclusively with stevia. Why would this be? I once used some dried leaf to sweeten tea and it was fine - so long as you get to appreciate its own flavour.
My wife is in the industry, buying a lot at source and selling to end users and says its because Stevia has a bitter aftertaste (and something to do with mouthfeel too) which has to be masked with bitter blockers.
The funny thing is, Stevia is marketed as a natural sweetener but if you've ever seen the extraction process (using industrial solvents) you would probably be willing to give Aspartame another go.
In reply to veteye:
> Otherwise known as Truvia.
That's just a brand name isn't it?