Tarragon Sauce

Description
In Romanian: Sos de tarhon

Ingredients

 * 1 tablespoon lard
 * 1 tablespoon flour
 * 1 cup beef broth or water
 * 1 onion
 * ½ cup sugar
 * 1 tablespoon chopped tarragon
 * ½ cup sour cream
 * salt

Directions

 * 1) Fry the onion in lard until yellowish.
 * 2) Add the flour, fry a little more, then pour the broth, add the salt, sugar, tarragon and let boil until the sauce is medium thick.
 * 3) Serve warm.