Marshmallow Icing
["1 1/3 c. sugar", "1/2 c. cold water", "1 Tbsp. corn syrup", "1 egg white", "6 marshmallows", "1 tsp. vanilla"]
["Cook sugar, water and corn syrup until it forms a soft ball when tested (238\u00b0).", "Beat egg white stiff.", "Add marshmallows, then the syrup, very slowly, beating constantly.", "Add flavoring.", "Beat until of the right consistency for spreading."]
["sugar", "cold water", "corn syrup", "egg", "marshmallows", "vanilla"]