Biscuits

Preheat oven to 425 degrees. Line two baking sheets with parchment paper and set aside.

Place pastry flour, sugar, baking powder, and salt in the bowl of a food processor; pulse until well combined; add butter and pulse until mixture resembles a coarse meal. Transfer to a large bowl and add all-purpose flour.

Add buttermilk to chilled flour mixture and mix until dough comes together. Turn dough out onto a floured work surface and bring together using the heel of your hand. Pat dough out to 1 1/2 inch thick and cut into 16 biscuits using a 3-by-2-inch round biscuit cutter, rerolling scraps as necessary; transfer to prepared baking sheet.

In a small bowl, whisk together egg and cream; brush biscuits and transfer to oven and bake for 5 minutes. Reduce heat to 400 degrees and continue baking until golden brown, about 22 minutes more. Let cool 5 minutes on baking sheet before serving.