Preheat the oven to 350°F (175°C). Grease three eight-inch round cake pans with butter, then line the bottoms with parchment paper rounds.
In a medium mixing bowl, sift together the cake flour, salt, and baking powder.
2¼ cup cake flour, 1 teaspoon kosher salt, 2 teaspoon baking powder
In a separate bowl, whisk together the eggs, milk, oil, and vanilla extract until smooth.
4 large egg, 1 cup whole milk, ¼ cup neutral oil, 2 teaspoon vanilla extract
In the bowl of a stand mixer fitted with the paddle attachment, beat the butter and sugar on medium-high speed until light, fluffy, and pale in color, about three to four minutes.
12 tablespoon unsalted butter, 2 cup granulated sugar
Reduce the mixer speed to medium-low. Add the dry ingredients in four additions, mixing just until combined after each addition. Scrape down the bottom and sides of the bowl before adding the next portion. The mixture should resemble wet sand.
With the mixer running on low, slowly pour in the egg mixture. Beat just until combined, scraping down the bowl as needed to ensure a smooth batter.
Divide the batter evenly among the prepared cake pans, about 460 grams of batter per pan.
Bake for 30-35 minutes, rotating the pans from front to back halfway through baking. The cakes are done when a toothpick inserted into the center comes out with just a few moist crumbs attached.
Let the cakes cool in the pans for ten minutes. Carefully remove them from the pans, peel away the parchment paper, and transfer them to a wire rack to cool completely.