Smetana Sauce - cooking recipe

Ingredients

1 small onion
2 tablespoons butter
1/3 cup dry white wine
1 teaspoon all-purpose flour
1 cup sour cream
2 tablespoons lemon juice
salt and pepper

Preparation

Peel and finely chop onion. In a small, heavy-based saucepan, melt butter over low heat. Saute onion until golden.
Add wine, increase heat and bring to a boil. Continue boiling until liquid is reduced to about half its original volume.
Stir flour into sour cream. Slowly add sour cream to hot liquid, stirring constantly. Bring back to a boil briefly. Remove from heat and strain through a fine sieve; discard onion. Add lemon juice and season to taste with salt and pepper.
Transfer to a gravy boat and serve.