Simple Chocolate Layer Cake with Custard Filling - Mr. Cook

Ingredients

• 175 g all-purpose flour
• 200 g granulated sugar
• 65 g unsweetened cocoa powder
• 1½ teaspoons baking soda
• ¾ teaspoon baking powder
• ¾ teaspoon salt
• 2 large eggs
• 240 ml milk
• 120 ml vegetable oil
• 2 teaspoons vanilla extract
• 240 ml hot water or hot brewed coffee
• 500 ml whole milk
• 100 g granulated sugar
• 4 large egg yolks
• 40 g cornstarch
• 1 teaspoon vanilla extract
• Powdered sugar