Butter is roughly 80% fat and 20% water, while oil is 100% fat. The Science of Fat in Cooking To understand the substitution, you must first look at the properties of each fat.
Butter Versus Oil: How Fat Properties Affect Cake Moisture
For sautéing, clarified butter or ghee is a better option because it provides the rich flavor of butter without the water content. A standard conversion is to use 80% of the amount of butter compared to the oil required.
How the Swap Affects Baked Goods When baking, the choice between a solid and a liquid fat determines the structure of the final product. Neutral oils like canola or vegetable oil impart little flavor, making them easy to replace with butter if you want a dairy note.
Butter Versus Oil: How Moisture Impacts Cake Texture
Because of this water content, butter behaves differently when heated, contributing to aeration and a distinct flavor profile that liquid oil cannot replicate. In savory applications like sautéing or roasting, butter can be an excellent substitute for oil, adding depth and a savory complexity.
More About Can you sub butter for vegetable oil
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