1In a large bowl or measuring cup, whisk together milk, cream, and egg yolks until the yolks are broken up and the mixture is combined.
2In a medium saucepan, combine sugar, salt, and cornstarch and whisk together.
3While whisking constantly, slowly drizzle the egg yolk mixture into the saucepan.
4Turn stovetop heat to medium and whisk constantly until thickened to a pudding-like consistency. It's done when the whisk leaves trails and it coats the back of a spoon.
5Remove from heat and pour immediately through a fine-mesh strainer into a heatproof bowl.
6Add butter, one tablespoon at a time, whisking until melted after each addition.
7Stir in vanilla extract.
8Allow to cool at room temperature for 15-20 minutes, stirring occasionally. Then, place plastic wrap directly against the surface.
9Refrigerate for several hours or up to 3 days before using.
Ingredients
1 cup whole milk
1 cup heavy cream
5 large egg yolks
133 g granulated sugar
0.25 tsp table salt
3 Tablespoons cornstarch
57 g unsalted butter
1.5 teaspoons vanilla extract
Equipment
large bowllarge measuring cupwhiskmedium saucepanclean dry whiskfine mesh strainerspatula