Want to know why the dishes cooked in the restaurant are different from those cooked at home?

Quite a few restaurants add something called palm oil to their cooking oil, and of course they are willing to put it with this oil. Sometimes I can't eat when I see half a plate of oil on the plate. Try it. It's transparent, not black at all, but it doesn't smell good in my mouth. So if I don't eat a big meal, I'd rather cook it myself at home. I'd rather not eat that dish myself.