Béchamel Sauce

Melt the butter in a heavy saucepan and stir in the flour with a whisk. Add the milk and stir hard. When smooth, let simmer slowly for 20 minutes. Cool slightly.

Beat the egg yolks in a bowl, add the cream, and stir. Add a little of the hot sauce to the cream and eggs slowly, beating continuously so as not to scramble the eggs, and then add the contents of the bowl to the sauce in the p