The Alton Brown in me is dying to know...I made this recpe today, and a lot at Christmas time combining cereal (Quaker Oat Squares), nuts and then a butter-brown sugar-corn syrup mixture you boil then add baking soda and vanilla to. The baking soda makes the butter mixture foam up and turn cloudy. I was just wondering why it did that, and why it was necessary? You then pour the mixture over the cereal and nuts and bake it and it comes out all candied and brown and deliciously addictive! Anyone have any ideas?