1.

Use 1 part water to 4 parts granulated sugar.
2.

Add 1/4 tsp. per vinegar per pound of sugar.
3.

Bring to boil, stirring constantly until boiling commences.
4.

Boil without stirring for 3 minutes, covered.
5.

Insert thermometer, and boil uncovered until 234F 112.2C is reached.
6.

Remove from heat, and allow to cool to 200F 93C.
7.

Whip with whisk until whiteness occurs.
8.

Pour (QUICKLY!) onto waxed paper having a towel beneath.
9.

Allow to cool undisturbed.
10.

Remove waxed paper, and store each cake in a plastic bag.