Dirty Chai Trifle - The Local Palate

Ingredients

• ½ cup white sugar
• 4 teaspoons cornstarch
• Pinch of salt
• ⅔ cup Oregon chai tea latte concentrate
• ⅔ cup heavy cream, divided
• 3 large egg yolks
• 1 teaspoon vanilla
• Nonstick cooking spray
• 2¾ cups all-purpose flour, spooned into measuring cup and leveled off
• ½ teaspoon salt
• ½ teaspoon baking soda
• 1 cup (2 sticks) butter, softened
• 2 cups sugar
• 2 teaspoons vanilla extract
• 4 large eggs, at room temperature
• 1 cup buttermilk, divided
• 1 cup cold heavy cream
• 2 tablespoons powdered sugar, sifted
• 1 teaspoon vanilla extract or paste
• Kahlua
• Decorative chocolate candy