Rich Cocoa Fudge
["3 c. sugar", "2/3 c. cocoa", "1/8 tsp. salt", "1 1/2 c. milk", "1/4 c. butter", "1 tsp. vanilla"]
["Line an 8 or 9-inch square pan with foil; butter foil.", "In heavy 4-quart saucepan, stir together sugar, cocoa and salt; stir in milk and cook over medium heat, stirring constantly, until mixture comes to full rolling boil, without stirring, to 234\u00b0 or until syrup, when dropped into very cold water, forms a soft ball which flattens when removed from water.", "Remove from heat.", "Add butter and vanilla; don't stir.", "Cool at room temperature to 110\u00b0 (lukewarm).", "Beat with wooden spoon until fudge thickens and loses some of its gloss.", "Spread quickly into prepared pan; cool, then cut into squares."]
["sugar", "cocoa", "salt", "milk", "butter", "vanilla"]