Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   2                    eggs yolks
     1/2                juice of lemon
   1      tablespoon    water
  20                    shrimp -- cooked, chopped
     1/2  cup           mushrooms -- sliced
   1      cup           butter -- melted
   1      teaspoon      flour
                        paprika
     1/2  pound         crabmeat -- cooked
     1/4  cup           oyster liquor

Preparation:

1. Over hot (not boiling) water in double boiler, beat egg yolks with whisk until fluffy. 2. Very slowly pour melted butter into yolks, whisking until thick. 3. Add lemon juice, flour, water, paprika, shrimp, crabmeat, mushrooms and oyster liquor; heat. Season to taste.