Beat egg whites & gradually sift cream of tartar inches Beat until smooth & glossy(quite stiff). Line well buttered 9" pie pan with meringue. Bake 1 hour at 275@ & let cool.
Cook chocolate & water in double boiler until thick, then add vanilla. Whip 1 cup cream & fold chocolate inches
Turn into shell & chill 3-4 hours.
Before serving, whip final cup of cream & add vanilla & sugar. Top pie.