Old Fashion Fudge
["2/3 c. Hershey's cocoa", "3 c. granulated sugar", "1 1/2 c. milk", "1/2 tsp. salt", "1 tsp. vanilla", "1/2 stick butter or margarine"]
["Mix cocoa, sugar, salt and milk together.", "Cook on high until boiling, stirring constantly.", "Turn to medium.", "Cook until thermometer reaches hard ball, about 40 to 45 minutes."]
["cocoa", "granulated sugar", "milk", "salt", "vanilla", "butter"]