Ruby's Chocolate Pie

Ingredients:

• 9-inch pie shell
• 3 egg yolks
• 1 cup sugar
• 2 healping tablespoons cornstarch
• 1/4 teaspoon salt
• 2 1/2 cups milk
• 1 heaping tablespoon cocoa
• 2 tablespoons butter
• 1 teaspoon vanilla

Instructions:

Mix together the egg yolks, sugar, cornstarch, salt, warm milk and cocoa. Cook on low heat until mixture becomes thick. Stir constantly while cooking. Remove from the heat and add the butter and vanilla. Cool and put into baked pie shell.