Holding the casserole with an oven-cloth, tilt the chicken liquor to one side. Skim off any fat that rises to the surface and discard. Return the casserole to the hob and stir in the tarragon and ...

In a small bowl, mix the crème fraîche with the chopped tarragon and season with pepper. Ladle the soup into bowls. Top with a dollop of the crème fraîche, garnish with the tarragon leaves and ...