Lemon-Filled White Cake Recipe

Ingredients

• 2 cups all-purpose flour
• 1 1/2 cup granulated sugar
• 3 1/2 teaspoon baking powder
• 1 teaspoon salt
• 1/2 cup shortening
• 1 cup milk
• 1 teaspoon vanilla
• 4 egg whites
• 3/4 cup granulated sugar
• 3 tablespoons cornstarch
• 1/4 teaspoon salt
• 3/4 cup water
• 1 teaspoon lemon zest, grated
• 1 tablespoon butter
• 1/3 cup lemon juice
• 1/2 cup granulated sugar
• 1/4 cup light corn syrup
• 2 tablespoons water
• 2 egg whites