Chocolate Pie
["2 c. sugar", "1/2 c. milk", "3 Tbsp. cocoa", "3 heaping Tbsp. flour", "3 egg yolks", "1 tsp. vanilla", "1 lump butter", "1 c. boiling water"]
["Cook ingredients until thick.", "Pour into baked pie shell.", "Use egg whites for meringue; put on pie."]
["sugar", "milk", "cocoa", "flour", "egg yolks", "vanilla", "lump butter", "boiling water"]