Chantilly Cake ? Recipe

Ingredients

• 1 cup butter, for cake
• 1 teaspoon salt
• 2 cups sugar
• 2 cups buttermilk
• 4 eggs
• 2 egg yolks
• 3 teaspoons baking powder
• 3 cups All Purpose White Flour
• 1 1/2 teaspoons vanilla extract, for cake
• 1/4 cup raspberry jam
• 2 tablespoons water
• 1 cup heavy cream
• 8 ounces mascarpone cheese
• 8 ounces cream cheese
• 2 1/2 cups powdered sugar
• 1 teaspoon vanilla extract, for frosting
• 2 cups mixed berries
• 1/4 cup butter, for frosting