Pastry Cream

Bahan-bahan (12 porsi)

• 4 large egg yolks
• 1/2 cup granulated sugar
• 1/4 cup brown sugar (packed (you can replace this with granulated sugar))
• 1/2 teaspoon kosher salt
• 1/4 cup cornstarch
• 2 cups whole milk (divided)
• 2 tablespoons butter
• 1 vanilla bean (or 1 tablespoon vanilla extract)