Orange Pastry Cream
- 1 cup milk
- 2 strips (1 by 2 inches) orange zest, from 1 orange
- 1/4 cup sugar
- 1/2 vanilla bean, split lengthwise
- 2 tablespoons cornstarch
- 1 large whole egg
- 1 large egg yolk
- 2 tablespoons unsalted butter, cut into small pieces
In a small saucepan, combine milk, orange zest, and 2 tablespoons sugar. Scrape in vanilla seeds, and add the pod. Bring the mixture to a boil over medium-high heat, stirring occasionally. Remove from heat, and cover. Set aside 10 minutes; discard orange zest and vanilla pod.
Prepare an ice bath in a large bowl. In a small bowl, mix together remaining 2 tablespoons sugar with cornstarch. In a medium bowl, whisk together egg and egg yolk; add the sugar mixture, and continue whisking until pale yellow.
Return milk mixture to heat. Bring to a boil, scraping vanilla seeds from sides of pan.
Slowly ladle half of boiling milk mixture into egg-yolk mixture, whisking constantly. Transfer this new mixture back to saucepan.
Set pan over medium heat, whisking constantly and scraping sides and edges of pan. Once mixture comes to a boil, whisk vigorously until very thick, about 1 1/2 minutes.
Remove pan from heat. Using a rubber spatula, scrape pastry cream into a medium bowl; set over ice bath. Whisk butter, piece by piece, into the pastry cream while still warm. Let cool completely. Lay plastic wrap on surface of pastry cream to prevent a skin from forming; wrap tightly. Store pastry cream, refrigerated, up to 1 day.