Aunt Ruth'S Chocolate Pie
["1 1/2 c. sugar", "4 Tbsp. cocoa", "4 Tbsp. cornstarch", "4 eggs, separated", "2 c. cream", "2 tsp. vanilla", "2 Tbsp. butter or margarine"]
["Mix sugar, cocoa and cornstarch; add egg yolks.", "Mix in cream slowly.", "Cook until thick, add butter and vanilla.", "Cream well. Pour into baked pie shell.", "Add meringue and bake at 400\u00b0", "until light brown."]
["sugar", "cocoa", "cornstarch", "eggs", "cream", "vanilla", "butter"]