1/4 c. + 2 tbsp. butter
3/4 c. flour
1 qt. heavy cream
Sherry, salt & a little cayenne pepper to taste
3 egg yolks

Combine butter and flour in a saucepan over medium heat until well mixed. Slowly add cream, mixing well after each addition. Cook until thick. Beat egg yolks slightly. Add a small amount of the hot mixture to the egg yolks blending very fast with a wire whisk. Continue to cook the first mixture adding the egg yolk mix and whisking as you add. Cook for a few more minutes be sure not to cook too long. The mixture should be thick and smooth. If you cook too long it will start to separate. Whisk in sherry, salt and cayenne pepper after removing from heat. Be sure to taste.