Whisk the egg yolks, 1 cup of the cream, the milk, granulated sugar and salt in a medium-sized saucepan over medium heat. Continue cooking and stir constantly for about 5 minutes until it is almost boiling. The mixture should be thick enough to coat the spoon or spatula.
Place the chocolate chips into a blender and then pour the milk mixture over the chocolate chips. Use care with the hot milk mixture. If using a food processor, cover the open spout with a cloth to prevent the hot mixture from contacting skin. Blend until smooth– scrape the sides as needed to be sure it is all mixed smoothly.
Pour the chocolate mixture into ramekins and place in refrigerator to set. The pots de creme should be chilled in 2-3 hours.
When ready to serve, whip the 1/2 cup of heavy cream with confectioner’s sugar until soft peaks form. Fold in vanilla. Spoon a dollop of whipped cream on the top of each ramekin. Top with berries, if desired. Serve and enjoy!