Mix an easy-handling crust that comes out both tender and flaky
The dough I'm using here is soft and easy to roll out, but it still turns out tender and flaky. I've added a bit more water than most pie doughs call for, and I've used about half the weight of the flour in total fat. You could go to a higher fat-to-flour ratio, but too much fat can make the dough fragile and difficult to manipulate.
For a flaky crust, make sure butter, shortening, and liquids are very well chilled. If you have a hot kitchen, chill your flour, too. Here's why.
- Cold fat creates steam, thus flaky layers. According to food scientist Shirley Corriher, cold fat melts slowly in the hot oven, giving the dough a chance set on either side of it. When the fat does start to heat up and melt, the resulting steam puffs layers apart, creating flakiness. Shortening, with its higher melting point, helps the fat stay firmer longer.
- Cold liquid stimulates less gluten formation. Strong gluten is good for bread, but it makes pie crusts tough.
Add a little lemon juice to the dough, too, because the acid can help shorten the gluten as well.
Use a food processor for quick, hands-free mixing. The goal is to quickly combine ingredients and cut in the fat with a brief pulsing, just until the mixture is crumbly. This way, you don't overwork the dough, warm it with your hands, or add more water—all of which can make pie crust tough and chewy.