I have used this method successfully, but since someone else has put in the legwork on making a tutorial, I will provide you with the website. Pretty cool method if you come to this.

http://wildwoodsurvival.com/survival/fire/cokeandchocolatebar/

Wow! That's amazing! I wonder if mayonnaise would make a good polish?

intersting, i dont know about using it for a polish, but i heard bagels are a good way to buff out any scratch marks