What are refined oils?
Refined oils are oils that have been "treated"
through various processes, finally becoming clear, odorless, and
less flavorful than the unrefined oils. The processes involved are
bleaching, deodorizing, degumming etc.
The refined oils are more suitable for high temperature
cooking. They also have an extended shelf life, meaning thereby
that they can be stored for longer times.
When purchasing olive oil, choose oil that is labeled
extra-virgin or virgin. Virgin olive oils
are produced from the first pressing of the olives, and are unrefined.
As a result, these oils are more flavorful and more healthful.
Store canola, olive, and peanut oils in the refrigerator
or in another cool, dark place. When refrigerated, olive oil tends
to develop hard, white flakes. These flakes do not alter the flavor
or quality of the oil, and disappear once the oil reaches room temperature.