What is margarine made from?

Margarine is a spread used for flavoring, baking and cooking. It is most often used as a substitute for butter. Although originally made from animal fats, most margarine consumed today is made from vegetable oil. The foodstuff was originally named oleomargarine from Latin for oleum (olive oil) and Greek margarite (pearl indicating luster). The name was later shortened to margarine.

Margarine may be chosen for a number of reasons including lower cost, ease of availability, evidence (primarily relevant for vegetable-based margarines) that it is healthier than butter, a desire to avoid consuming animal-based products (of particular concern for vegans and also based on the assumption that the margarine is vegetable-based) and/or a simple personal preference to butter and/or other spreads on account of taste.