Four Minute Chocolate Filling
["2 c. sugar", "2/3 c. sweet milk", "1 tsp. vanilla", "1/2 c. cocoa", "1 stick butter", "1/2 tsp. salt"]
["Mix sugar and cocoa (dry).", "Add milk and stir thoroughly.", "Let come to a boil.", "Boil hard for 4 minutes.", "Remove from heat; add butter.", "Let cool about 15 minutes.", "Add vanilla.", "Beat until creamy."]
["sugar", "sweet milk", "vanilla", "cocoa", "butter", "salt"]