Here’s a weird question. I was watching a bunch of cooking shows, and it dawned on me that I never, ever use canola or vegetable oil. The only oils I use are olive (and I always have at least a half gallon), peanut oil, and sesame oil. They do everything I need 95% of the time, although I have been known to use lard. Obviously I use butter a great deal when necessary.
Why do people use canola and vegetable oil? Is there something they do better than, say peanut oil in a deep fryer? Is it just peanut allergies?