The term 'natural' is meaningless. Any flavor produced in a factory or lab can legally be called natural. They don't have to resort to a bizarre animal or plant-based solution.
Truthful companies avoid the term. Look for its absence. Seriously.
TB A+ Partner Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense. -Buddha