Homemade White Cake with Vanilla Buttercream Frosting

Ingredients

• 3 cups all-purpose flour (375 grams), sifted
• 2 1/2 teaspoons baking powder
• 1/2 teaspoon salt
• 3/4 cup plus 2 tablespoons unsalted butter (198 grams), softened
• 1 and 3/4 cup granulated sugar (350 grams)
• 2 tablespoons vegetable oil (30 ml)
• 2 teaspoons vanilla extract
• 1/2 teaspoon almond extract
• 6 large egg whites, room temperature
• 1/4 cup sour cream (60 ml), room temperature
• 1 cup whole milk (240 ml), room temperature
• 1 1/2 cup unsalted butter (340 grams), softened
• 5-6 cups powdered sugar (550-660 grams), sifted
• 1/4 to 1/3 cup whipping cream (60-80 ml)
• 1 teaspoon vanilla extract
• 1/4 teaspoon almond extract
• 1/2 teaspoon salt, to taste