Pat the chicken breasts dry, season and turn in flour. Heat the clarified butter in a pan, fry the chicken breasts in it for about 4 minutes each until golden.
Trim and wash the rhubarb, peel off if necessary, then cut the stalks into 1 - 2 cm pieces.
Heat the cream and broth in a saucepan, stirring constantly. Add the rhubarb pieces and cook for about 5 - 6 minutes. Then puree, add the sugar and bring to the boil again. Season to taste with salt and pepper.
Cut the chicken breasts into wide strips and serve with the sauce.