Rybnoye Satsivi (Fish In Georgian Walnut Sauce) - cooking recipe

Ingredients

1 1/2 lbs fish (salmon, halibut, cod or whiting)
salt
lemon juice
Walnut Sauce
4 tablespoons butter
6 ounces walnut meats
2 medium onions
1 tablespoon flour
1 egg yolk
3 garlic cloves
1/8 teaspoon cinnamon
1/8 teaspoon clove, ground
1 teaspoon paprika, sweet
1 bay leaf, crushed
1 cup fish stock (made during cooking)
1 ounce parsley, chopped
1/2 teaspoon salt

Preparation

Poach the fish in salted water with some lemon juice. Remove the fish from the stock and cool. Save 1 cup of the stock for later use.
Finely chop the onions and garlic and fry lightly in melted butter. Add flour to make roux, then add the fish stock, stiring constantly.
When it comes to a boil, remove from heat.
Chop or grind walnuts, add them and all the other ingredients to the sauce. Mix thoroughly and cool.
Pour the sauce over the fish and serve.