• ½ cup butter
• 2 egg yolks
• ¼ teaspoon salt
• 2 tablespoons lemon juice
• few grains cayenne pepper

Directions

Melt butter in a double boiler over simmering water.

Beat egg yolks well and add to butter, stirring constantly with a wire whisk or wooden spoon. Gradually add lemon juice.

Cook, stirring, until thickened and hot. Add salt and cayenne pepper before serving. If sauce is too thick, add a teaspoon or two of hot water.
This is great over Asparagus and Eggs.