Fanny'S Fudge
["3 c. sugar", "2/3 c. cocoa", "1/8 tsp. salt", "3/4 c. milk", "4 Tbsp. butter", "1 tsp. vanilla"]
["Butter large pie pan.", "Combine first 4 ingredients in saucepan. Cook until small ball forms in cold water. Remove from heat."]
["sugar", "cocoa", "salt", "milk", "butter", "vanilla"]