Unsalted margarine is a non-dairy alternative to butter that is typically made from vegetable oils. It is a spreadable fat that resembles the texture and functionality of butter but does not contain any dairy ingredients. Unsalted margarine is commonly used as a substitute for butter in cooking, baking, and spreading on bread. Since it is unsalted, it allows for greater control over the salt content in recipes, making it suitable for those who prefer a lower sodium intake. Unsalted margarine can be used in a wide range of recipes, including cakes, cookies, pastries, and sautéing vegetables.