Cake Flour: Its lower protein content produces a tender, velvet-like crumb that all-purpose flour simply cannot match.Unsalted Butter: Use high-quality, European-style butter (82% fat) for superior flavor and emulsion.Large Eggs: Room temperature is non-negotiable—they incorporate air far more effectively than cold eggs.Whole Milk or Buttermilk: The acidity in buttermilk reacts with baking soda to create a lighter lift.Pure Vanilla Extract: Invest in real vanilla; the artificial stuff just doesn't offer the same depth