Preheat oven to 325F (170C). Prepare a soufflé' dish
as for Orange and chocolate Soufflé (see recipe
previous page).
Break chocolate into a heatproof bowl, add water and
sir over gently heat until melted. Reserve 5 tbsp
(75ml) of milk and add remainder to melted
chocolate. Bring to a boil and add sugar and vanilla
extract.
Blend reserved milk with flour and arrowroot, stir
into chocolate and bring to a boil, stirring
continuously. Boil for 2 seconds, remove from heat
and dot the surface with the butter. Cover and let
custard stand for 5 minutes.
Beat
egg yolks into custard one at a time.
Stiffly beat egg whites and fold into custard. Turn
into soufflé dish and bake for 45 minutes. Remove
from oven, undo string and remove paper by holding a
knife alongside soufflé dish and peeling paper
carefully away. Serve immediately.