No I never sift either. I've never made angel food cake from scratch too, LOL.
What I do is I mix the dry stuff in a large bowl... I mix them toroughly so that more air gets in that's the idea of sifting, right, that it becomes more fluffy
Sifting is super messy... I admire you for doing it and cleaning up after youself...
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Re: sifting flour?
that's the idea of sifting, right, that it becomes more fluffy 
