Crème anglaise (french for "english cream"), custard sauce, pouring custard, or simply custard is a light, sweetened pouring custard used as a dessert cream or sauce. it is a mix of sugar, egg yolks, and hot milk usually flavoured with vanilla. the cream is made by whipping egg yolks and cream together until the yolk is almost white, and then slowly adding hot milk, while whisking. it is often flavored with vanilla extract, sugar or seeds. the sauce is then cooked over low heat (excessive heating may cause the yolks to cook, resulting in scrambled eggs) and stirred constantly with a spoon until it is thick enough to coat the back of a spoon, and then removed from the heat. it is also poss...

Source: Wikipedia