Caramel Icing
["1 c. brown sugar", "1/2 c. white sugar", "1/3 c. milk", "1 Tbsp. corn syrup", "2 Tbsp. shortening", "2 Tbsp. butter", "1/2 tsp. salt", "1 tsp. vanilla"]
["Cook one minute after boiling.", "Cool to lukewarm and beat."]
["brown sugar", "white sugar", "milk", "corn syrup", "shortening", "butter", "salt", "vanilla"]