White Mountain Frosting - cooking recipe

Ingredients

2 c. granulated sugar
2/3 c. hot water
2 Tbsp. white corn syrup
3 egg whites
1/4 tsp. cream of tartar
10 to 12 marshmallows

Preparation

Put sugar, water and
corn
syrup
over slow fire; stir until sugar is dissolved\tand
mixture
begins to boil.
Cover for 2 to 3 minutes
to wash down crystals.
While syrup cooks, beat egg whites and cream
of
tartar
until whites are stiff. Allow syrup to boil vigorously\tuntil
it spins a thread.
Add marshmallows and remove from
fire.
Pour
syrup
very
slowly over egg whites, beating
constantly.
Be sure that syrup goes into egg whites and not on the side of bowl.
Beat until cool, frosting should hold its shape when dropped from spoon.