You use granulated sugar unless otherwise noted.
Granulated sugar shouldn't be used as a substitute where powdered sugar is specified in a recipe; granulated sugar will be too coarse.
Granulated sugar
Yes, you can substitute white granulated sugar for cane sugar, since most sugars do come from cane. The important thing is to use granulated (not powdered), and to use white if that's what's called for, and to use brown sugar if that's what's called for.
You should be able to substitute granulated sugar doe castor sugar without any significant detriment to the resulting product.
Confectioner's Sugar (powdered sugar) has a completely different consistency and quality than granulated sugar. You cannot substitute one for the other.
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rwgular sugar is granulated sugar. the other kind is confectioner's sugar, or powdered sugar
Organic sugar and granulated sugar is not the same thing
Yes, cane sugar and granulated sugar are the same thing. Granulated sugar is made from either sugarcane or sugar beets, but most commonly it is made from sugarcane.
Cornstarch is added to confectioners (powdered) sugar to prevent the sugar from lumping, so the amount is quite minimal. And adding cornstarch to granulated sugar isn't what makes it confectioners sugar. Confectioners sugar is much finer and softer than granulated sugar, it has a texture much like that of cornstarch. So you would have to be able to grind granulated sugar into a very fine powder in order to make it like confectioners sugar.
Cane sugar and granulated sugar are both types of sugar, but cane sugar is made from sugar cane while granulated sugar can be made from either sugar cane or sugar beets. Cane sugar is less processed and may have a slightly different flavor compared to granulated sugar.