2
tablespoons butter
2 tablespoons flour
1 tablespoon finely
chopped onion
1 cup cold water
1 cup cold milk
1 tablespoon finely
chopped caper
1 tablespoon lemon
juice
1/2 cup sour cream
1 egg yolk
salt and pepper to
taste
Preparation:
Brown flour in butter over medium heat.
Add
finely chopped onion and fry only 1 minute, than
add water and milk gradually, stirring constantly.
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Add
chopped caper and season and continue stirring
until sauce thickens.
Blend
together egg yolk and sour cream and add to
hot sauce.
