[temp453463343]

"Personally I know I eat much more fries if I eat them with ketchup and I will eat much more steak if I eat it with steak sauce."

Not to detract from your other excellent points but:

1 - it makes it easier to eat more because it's less dry. If you eat a bunch of fries with nothing it will turn into a huge lump in your stomach and you won't want more.

2 - insoluble fiber in apples slows fructose absorption, but a hunk of fatty meat does not? Fat slows absorption through the intestine.

3 - Vinegar is supposed to suppress appetite. Eating a pickle when your hungry will 4/6 times make you feel a lot less hungry.