Oleo margarine is a type of spread made from vegetable oils, water, and sometimes animal fats. It was developed as a substitute for butter and is often used in cooking and baking. Oleo margarine can be found in various forms, including sticks and tubs, and is available in different flavors and formulations, such as low-fat or non-dairy options. The production of oleo margarine involves emulsifying the oils with water and adding ingredients like salt, vitamins, and flavorings. It is popular for its versatility and lower cost compared to butter, making it a common choice for households and food service establishments.