Rich Cocoa Fudge(Hershey'S Original Recipe)  
["3 c. sugar", "2/3 c. Hershey's cocoa", "1/8 tsp. salt", "1 1/2 c. milk", "1/4 c. butter or margarine", "1 tsp. vanilla extract"]
["In heavy 4-quart saucepan over medium heat, cook sugar, cocoa, salt and milk to a full boil, stirring constantly.", "Boil, without stirring, to 234\u00b0 on candy thermometer or until syrup, when dropped into very cold water, forms a soft ball that flattens when removed from water.", "Bulb of thermometer should not rest on bottom of saucepan.", "Remove from heat.", "Add butter or margarine and vanilla extract; do not stir.", "Cool at room temperature to 110\u00b0 (lukewarm).", "Beat with wooden spoon until fudge thickens and loses some gloss.", "Quickly spread in buttered 8 or 9-inch pan.", "Cool. Cut in 3 dozen squares."]
["sugar", "cocoa", "salt", "milk", "butter", "vanilla extract"]