<<Disclaimer: Verify this information before applying it to your situation.>>
[log in to unmask] asked:
> What the heck is caster sugar?
From the rec.food.cooking FAQ:
UK castor/caster sugar is somewhat finer than US granulated sugar. There is
a product in the US called superfine sugar, which is about the same as
UK castor/caster sugar.
So it's just sugar with a different grind.
Don Wiss.