Olive oil is best when used without heating- like MJ said in salads dressings and as dips. Once heated it looses it nutritional value. Mustard oil is very bad for people with cholestrol- it has about 60% monounsaturated fatty acids of which 42% erucic acid- main cause of cholestrol. So all those Bengali babus out there watch what u eat.

I dream of a better tomorrow where Chickens can cross the Road without having their motives questioned - Unknown