On Thu 16 Jun 2005 06:21:02p, Sheldon wrote in rec.food.cooking:

>
>
> Andy wrote:
>> Wondering about substituting powdered instead of granulated sugar in a
>> cream cheese frosting recipe.
>>
>> Do they measure the same for volume? The recipe calls for 1 cup
>> granulated.
>
> Are you sure about a cream cheese frosting recipe calling for
> granulated... I'd be very suspicious... are you sure you read that
> correctly?
>
> Naturally you can substitute granulated for powdered equally by weight.
> I think you can substitute 2 1/2 cups powdered for one cup granulated,
> but this is not very accurate as granulated sugars are not always the
> same volume by weight, neither are powdered for that matter.. it's best
> to use a scale, unless you buy both sugars in equal weight packages....
> granulated sugar does come in a one pound box too.
>
> Sheldon

In addition to that, powdered sugar most often has some amount of
cornstarch added to it. I believe that's used primarily to prevent caking.

--
Wayne Boatwright *¿*
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Give me a smart idiot over a stupid genius any day.
Sam Goldwyn, 1882-1974