For UK cooks who are familiar with American foods: what is icing sugar?!

Question: Is that confectioner's (powdered) sugar or castor (regular) sugar or something else entirely?

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Answers: Is that confectioner's (powdered) sugar or castor (regular) sugar or something else entirely?

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It's confectioner's sugar.

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its a sweet sugar that tastes delicous. you can put it on popcorn, french toast or even cakes.

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It is confectioners sugar, powdered.

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It's powdered sugar - think you might call it "frosting"????

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