Rose's Downy Yellow Butter Cake

INGREDIENTS

• 1 3/4 teaspoons vanilla extract
• 1/2 teaspoon kosher salt
• 1 tablespoon baking powder
• 3/4 cup (6.4 oz / 180 g) whole milk, at room temperature
• 2 cups (9.3 oz / 260 g) cake flour
• 5 large egg yolks (3.25 oz / 95 g), at room temperature
• 10 tablespoons (5 oz / 140 g) unsalted butter, cut into pieces and at room temperature
• 1 1/4 cups (8.8 oz / 250 g) sugar