In a heatproof casserole, make a bed of carrot, onion, and mushrooms.
Add butter cut into thin slices and add champagne or wine.
Place chicken breasts on top of the mixture. Sprinkle the chicken
with salt and pepper, cover the casserole, and bake chicken in
a moderate oven (325^) basting it frequently with the liquid from
the casserole for 50-60 minutes or until it is tender.
Remove chicken to a platter and keep warm. Cook sauce uncovered
over moderate heat until it is reduced by half.
Stir in heavy cream and champagne or wine and pour sauce through
a sieve. Season with salt and pepper and a little finely chopped
parsley. Pour sauce over the chicken breasts and garnish the platter
with braised celery and sautéed pimentos.
Serves 2 to 4.
From The Hammersmith Farm Cookbook