Fresh Strawberry Cake

Ingredients

• 5 large egg whites, (at room temperature)
• 1/2 cup whole milk, (at room temperature)
• 1-1/2 teaspoons pure vanilla extract
• 2-1/2 cups cake flour
• 1-3/4 cups sugar
• 1 tablespoon + 1 teaspoon baking powder
• 3/4 teaspoon salt
• 12 tablespoons unsalted butter, (at room temperature and cut into cubes)
• 1/4 cup strawberry puree made from fresh strawberries*, (room temperature)
• 3 sticks (24 tablespoons) unsalted butter, (room temperature)
• 3-1/4 - 3-1/2 cups powdered sugar ((keep it as close to 3 cups as possible))
• 1/2 teaspoon pure vanilla extract
• 5 tablespoons strawberry puree, (room temperature)