Thank you. It's a fruit cake so the cake ought to be fine I didn't know of the icing would go funny?
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You'll be fine. So will your cake, which will might benefit from the slight aging. Loosely covered at room temperature is the way to go. If you have a bowl that's big enough, invert it over the cake.
I read these things from the top down; sorry I didn't notice your original post.
Like overnight, but easier.
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