How to make it Get hired at the place that makes it and you’ll learn. The Dr Pepper recipe is unknown to the public. It’s a secret.
How it has evolved Dr Pepper, itself not the can or bottle, hasn’t changed at all. The logos, and bottles, and cans have though. Back then, the bottles were made out of glass. Now a days, the bottles are made out of plastic.
References http://www.drpeppermuseum.com/About-Us/History-Of-Dr--Pepper.aspx http://inventors.about.com/library/inventors/bldrpepper.htm http://www.drpeppermuseum.com/Visit-Us/Tours/Student-Tours.aspx One picture! Two picture! http://www.uspages.com/companyID562.htm