[quote=Aragorn]
Correct me if I'm wrong, but isn't there olive oil? I'm not much of a cook, so I wouldn't really know, but I've often heard it referred to as a healthy alternative.
[/quote]
Olive oil is cooking oil. Cooking oil essentially covers any oil used to cook with. By substitutes, it's for chemically engineered alternatives that act similar to oil and the failed substitute, but are successful.