F. L. Gillette, The Whitehouse Cookbook (1887)
“ When the crust is made, it makes it much more flaky and puff much more to put it in a dish covered with a cloth and set in a very cold place for half an hour, or even an hour; in summer, it could be placed in the ice box.A great improvement is made in pie crust by the addition of about a heaping teaspoonful of baking powder to a quart of flour, also brushing the paste as often as rolled out, and the pieces of butter placed thereon, with the white of an egg, assists it to rise in leaves or flakes. ”
