Margarine is a popular butter substitute made from vegetable oils, animal fats, or a combination of both. It is often used in cooking and baking due to its creamy texture and ability to enhance flavors. Margarine can be found in various forms, including sticks, tubs, and liquid, making it versatile for different culinary applications. Originally developed as a cheaper alternative to butter in the 19th century, margarine has evolved over the years to include healthier options with reduced trans fats. Many brands now offer margarine enriched with vitamins and omega-3 fatty acids, appealing to health-conscious consumers.