Foolproof Pie Dough - Pie dough can easily go wrong: crusts can turn dry and crumbly, flaky but leathery, or tender, but without flakes. Bridget Lancaster uncovers the test kitchen's secret to a foolproof pie dough recipe that bakes up tender and flaky every single time. Then, Christopher Kimball demonstrates how to roll out pie dough, the right way. Blueberry Pie - Bridget Lancaster shows host Christopher Kimball how to make a blueberry pie filling that is firm and full of fresh, bright flavor and still-plump berries. Equipment Corner: Baking Sheets - Equipment expert Adam Ried discusses baking sheets with host Christopher Kimball and proves this kitchen essential is a must-have for every home cook. Science: Pie Pastry - Odd Todd and the test kitchen Science Expert, Guy Crosby, examine the secrets to foolproof pie pastry.