Lamingtons Recipe - Los Angeles Times

Ingredients

• 1 1/2 cups cake flour, sifted
• 2 teaspoons baking powder
• 1/2 teaspoon salt
• 6 egg yolks, room temperature
• 1 cup superfine sugar
• 1/3 cup boiling water
• 3 tablespoons unsalted butter, divided
• 2 teaspoons vanilla extract
• 1 pound powdered sugar
• 1/3 cup unsweetened cocoa powder
• 1/3 cup milk
• Dash kosher or sea salt
• 2 cups unsweetened shredded coconut