Preparation

做面团：

• 将面粉，糖和盐放在中等大小的大碗中。使用糕点搅拌器，大型叉叉或手指的尖端，切入或捏或挤压酥油，直到混合物类似于一碗甜豌豆。用叉子快速和轻轻地扔掉混合物，一次撒上奶油或牛奶1汤匙。（最好是在没有足够的液体方面犯错，而不是太多；您不想要汤皮。）继续扔掉，直到轻轻按压时面团凝聚在一起。

  With lightly floured hands, loosely gather up the dough into a flat ball, place it in a bowl, and cover with plastic wrap. Refrigerate until you are ready to roll out the crust. I try to chill at least 30 minutes but not too much longer than overnight.

滚出面团并填充馅饼：

• 将烤箱预热至425°F。

  Gather the dough into two balls, one slightly larger than the other. Refrigerate the smaller ball. On a lightly floured work surface, roll out the larger ball of dough into a 12-inch circle about 1/8 inch thick. Place a 9-inch pie plate upside down on top of the rolled-out dough. Using a small knife, cut around the plate, leaving a 1-inch border of dough around the plate. Remove the plate. Fold one side of the crust over in half. Fold the crust into quarters. Pick up the crust so that the center point is positioned in the center of the plate. Unfold the dough and press it firmly into the pie plate.

  在一个大碗中，将覆盆子，面粉，糖和柠檬皮混合在一起，然后轻轻折腾。

  Using a pastry brush, brush the inside of the bottom crust with the egg whites, then spoon in the filling. Sprinkle the top of the filling with cinnamon, then dot it with the butter.

  Remove the dough for the top crust from the refrigerator and roll it out into an 11-inch circle the same way you rolled out the bottom crust. Lay the top crust over the filling. To dress up the pie, press together the top and bottom edges of the crust all around the pie, then fold down the edge like a shirt collar. Using kitchen shears or a sharp knife, cut 1/4-inch-long slits all the way around, about 1/2-inch apart. Raise up every other tab to a 90-degree angle, so there’s a flag up, flag down, flag up, flag down design running around the rim. Cut slits in the crust to allow the steam to escape. If you like, you can brush the top with milk and sprinkle with a scant amount of sugar.

烤馅饼：

• 将馅饼放在烤箱中。烘烤15分钟，然后将烤箱温度降低到350度，然后烘烤直到外壳变成金黄色，再35至40分钟。如果铝箔开始过度变褐，则用2到3英寸宽的铝箔覆盖地壳的边缘。在电线架上冷却至室温。