Tarragon Sauce
Ingredients: Tarragon, stock, butter, flour.
To half a pint of good stock add two good sprays of fresh tarragon,
simmer for quarter of an hour in a stewpan and keep the lid on. In
another stewpan melt one ounce of butter and mix it with three
dessert-spoonsful of flour, then gradually pour the stock from the
first stewpan over it, but take out the tarragon. Mix well, add a
teaspoonful of finely chopped tarragon and boil for two minutes.
Source: The Cook's Decameron: A Study In Taste, Containing Over Two
Hundred Recipes For Italian Dishes from a project that puts
out-of-copyright texts into the public domain. This is from a *very*
old source, and reflects the cooking at the turn of the last century.
Update as necessary.