Bearnaise Sauce
["4 egg yolks", "1 c. butter", "2 Tbsp. lemon juice", "1/4 tsp. salt", "dash of pepper", "1 Tbsp. tarragon vinegar", "1 tsp. chopped parsley"]
["Put egg yolks with 1/3 of the butter in top of double boiler. Keep water in the bottom hot but not boiling.", "Stir eggs and butter constantly until butter melts adding more butter a little at a time and stirring each time until it melts.", "As soon as the mixture is thick remove from heat and stir in rest of ingredients. Serve at once."]
["egg yolks", "butter", "lemon juice", "salt", "pepper", "tarragon vinegar", "parsley"]