2In a small saucepan, heat chocolate, 1/4 cup sugar, 2 tablespoons water, and coffee; stir constantly until melted. Add softened gelatin to the saucepan, and heat until completely dissolved. Remove pan from heat, and gradually pour chocolate mixture into beaten egg yolks, whisking constantly. Return the custard to the pan. Cook over medium-low heat, stirring constantly, until mixture thickens slightly. Remove from heat, and stir in 1 teaspoon vanilla. Transfer to a bowl and allow to cool to room temperature.
3When chocolate mixture has cooled, beat egg whites to soft peaks. Gradually add 2 tablespoons sugar, and beat until stiff but not dry. Fold whipped egg whites into chocolate mixture. Whip 1/2 cup cream until stiff, and fold into chocolate mixture. Spoon into pie crust and refrigerate.
