Pie:

3 c. milk
4 egg yolks
3 tbsp. butter
1 1/2 tsp. vanilla

Combine cocoa, sugar, salt and cornstarch in medium sauce pan. Mix milk and egg yolks together. Gradually blend in dry ingredients and stir until smooth. Cook on medium heat until thick. Remove from heat, add butter and vanilla. Pour into 9-inch crust. Top with meringue.

Meringue:

4 egg whites
1/2 tsp. salt
1/2 tsp. cream of tartar
8 tbsp. sugar

Beat egg whites and salt until foamy and soft peaks form. Add sugar and cream of tartar. Beat until it forms firm peaks. Put on pie and bake at 350°F until brown.