1In a medium saucepan, combine the whole milk, heavy cream, orange zest, and the scraped seeds and pod of the vanilla bean. Bring the mixture to a gentle simmer over medium heat, stirring occasionally. Do not boil. Remove from heat and let it infuse for 15 minutes.
3Remove the vanilla bean pod from the milk mixture. Slowly pour about one-third of the warm whole milk and heavy cream mixture into the egg yolks and granulated sugar, whisking constantly to temper the egg yolks.