Mix cocoa and flour in top of a double boiler over hot-water and whisk in
about half of the 1 cup of water, (just enough to make a
smooth paste)...Blend in the sugar and the beaten egg yolks and add remaining
water and milk.
Cook over low until mixture is thick, add butter & vanilla. Pour into baked pie
crust. Top with meringue.
MERINGUE TOPPING
2 egg whites; 4 T. sugar 1/2 t. vanilla
Beat egg whites until frothy; gradually add sugar, continuing to beat until
stiff peaks form.
Add vanilla or other flavoring. Spoon onto pie, spreading to crust edge to
seal filling in.
Bake at 325 degrees for about 18 minutes, more or less until nicely browned.
For a higher topping:
use 3 egg whites, 6 tablespoons sugar, and 1/2
teaspoon vanilla.