I set out to see whether butter or oil really makes a difference in baked goods, and when it’s worth sticking to one over the other. By testing recipes that call for creamed butter, melted butter, and ...

Claire is Lifehacker's Senior Food Editor. She has a B.S. in chemistry, a decade of food journalism experience, and a deep love for mayonnaise and MSG. Cooking without fat is doable, but not fun. Not ...

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