My Best Fudge Frosting
["1/2 c. granulated sugar", "2 Tbsp. margarine", "2 Tbsp. cocoa", "1/4 c. milk", "1 Tbsp. light corn syrup", "pinch of salt", "1/2 to 3/4 c. 4xxx sugar", "1 tsp. vanilla"]
["Mix sugar and cocoa in boiler.", "Add margarine, milk, syrup and salt.", "Heat to boiling, stirring frequently.", "Boil vigorously 3 minutes.", "Stir occasionally.", "Cool.", "Beat in 4x sugar and vanilla."]
["sugar", "margarine", "cocoa", "milk", "light corn syrup", "salt", "sugar", "vanilla"]