I bought it from amazon
King Arthur Unbleached Cake Flour Blend, 32 oz, $10 after shipping. Not a bad price for 2 lbs of specialty flour.
Cake flour is a mixture of wheat flour and corn starch now. Pure wheat flour is hard to find.
It works pretty good. I made some cake rolls, very soft, low gluten.
http://www.amazon.com/gp/product/B008RGDK92/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
Cake flour is a mixture of wheat flour and corn starch now. Pure wheat flour is hard to find.
It works pretty good. I made some cake rolls, very soft, low gluten.
http://www.amazon.com/gp/product/B008RGDK92/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1