Caramel Icing
["2 c. brown sugar", "1 c. granulated sugar", "1 egg white", "3/4 c. cream", "1/8 tsp. soda (baking)"]
["Combine sugar, baking soda and cream.", "Cook until the mixture forms a soft ball in cold water (238\u00b0).", "Remove from heat and cool until lukewarm.", "Beat until creamy; add unbeaten egg whites and beat until thick enough to spread onto the cake."]
["brown sugar", "sugar", "egg", "cream", "soda"]