Recipes often talk about mixing oils to raise the smoke point. For example adding peanut oil to olive oil will let the mixture get hotter without smoking. What determines smoke point? Isn't it the fats in the oil? If so, how does cutting a low smoke point fat act to raise its smoke point? As far as I can see, smoke point isn't like boiling point, where a solute will raise the BP. And it's not like mixing paint where the end product is a blend of the two colors.