Hazırlanışı
1Gather the ingredients. Preheat the oven to 300 degrees F (150 degrees C). Move an oven rack to the lowest position.
2Whisk egg yolks, 1/4 white sugar, and vanilla together in a heatproof bowl until smooth. Bring cream just to a simmer in a saucepan over medium-low heat; gradually whisk hot cream into egg yolk mixture (a little at a time to prevent the mixture from scrambling), whisking continuously until combined.
3Bring a couple of inches of water to a simmer in a saucepan over medium-low heat; set the bowl with cream mixture over the saucepan to form a double boiler. Cook, gently stirring with a wooden spoon, until cream mixture thickens enough to easily coat the back of the spoon.