Food

The science of junk food.

http://www.nytimes.com/2013/02/24/magazine/the-extraordinary-science-of-junk-food.html?pagewanted=all&_r=1&

Expected and frightening in equal measures!

That would seem to cover the savoury model. Don't suppose you have the science on why when i open a box of jaffa cakes, i keep going back to the cupboard til the box is empty? like nothing else.

According to the above article the body thinks things that melt in the mouth (like the sponge of Jaffa cakes) don't count as food so you can eat as much as you want.