Fast Fudge Frosting
["1 pkg. confectioners sugar, sifted (4 1/2 c.)", "1/4 c. cocoa", "1/4 tsp. salt", "1/3 c. boiling water", "1/3 c. butter or margarine (soft)", "1 tsp. vanilla"]
["Combine sugar, cocoa and salt, mixing well.", "Add boiling water and butter; blend.", "Add vanilla.", "Beat until of spreading consistency."]
["confectioners sugar", "cocoa", "salt", "boiling water", "butter", "vanilla"]