Why does confectioners sugar taste different?
Also question is, why does my powdered sugar taste weird?
The starch added to most powdered sugar can make frosting taste slightly metallic.
Similarly, what can you use in place of confectioners sugar? You can make powdered sugar from granulated sugar by simply blending 1 cup granulated sugar and 1 teaspoon cornstarch until a fine powder. 1 3/4 cup powdered sugar can be substituted for 1 cup granulated sugar but the sucess of the recipe really depends on how you are using the sugar.
Herein, is there a difference between powdered sugar and confectioners sugar?
In some contexts, the term powdered sugar is used to indicate all forms of refined sugar that have been ground or powdered. In other words, it encompasses any sugar with a fine grain including confectioners' sugar. Confectioners' sugar is a powdered sugar though not all powdered sugar is confectioners' sugar.
How can you tell if powdered sugar has gone bad?
If the consistency of the product turns clumpy or hard, it's a sign that the powdered sugar has been exposed to moisture or humidity. But as long as there is no significant change in the powdered sugar's texture and color, it is still safe to use even when stored for years.