Chocolate Pudding

Bahan-bahan (4 porsi)

• 2/3 cup sugar
• ¼ cup unsweetened natural cocoa powder, (such as Hershey's)
• 2½ tablespoons cornstarch
• 1/8 teaspoon salt
• 2½ cups whole milk
• 1½ oz semi-sweet chocolate, (best quality such as Ghirardelli, finely chopped)
• 2 teaspoons vanilla extract
• Homemade whipped cream, (for serving (optional))