Preheat the oven
to 150'C/300"F/Gas 2 and line two baking sheets with
non-stick baking paper. Whisk the egg whites in a
grease-free bowl, using a hand-held electric whisk,
until very stiff.
Add the
caster sugar, a little at a time, whisking until
the meringue is very stiff. Whisk in the
corn flour, vinegar and vanilla essence.
Using a teaspoon,
mound the mixture into snowballs on the prepared
baking sheets. Bake for 30 minutes.
Cool on the baking
sheets, then remove the snowballs from the paper
with a palette knife.
Cook's Tip:
Make Pineapple Snowballs by lightly folding about
50g/12oz cup finely chopped semi-dried pineapple
into the meringue.