Massachusetts Boston Cream Pie

Pastry Cream

• 5 oz sugar
• 12 oz whole milk
• 1 pinch salt
• 6 egg yolks, from large eggs
• 4 tbsp corn starch
• 1 vanilla bean, split lengthwise, seeds scraped
  或 1 tsp vanilla extract, split lengthwise, seeds scraped
• 2 oz unsalted butter, cubed

Cakes

• 4 oz unsalted butter, plus extra to grease
• 10 oz sugar
• 2 large eggs
• 1 tbsp vanilla extract
• 12 oz all-purpose flour
• 1 tbsp baking powder
• ¾ tsp baking soda
• ¼ tsp salt
• 12 oz buttermilk

Ganache

• 4 oz semi-sweet chocolate chips
• 4 oz heavy whipping cream