Pastry: In a food processor, place the flour, salt, and sugar and process until combined. Add the butter and process until the mixture resembles coarse meal. Add 1/4 cup (60 ml) water and process until the dough just holds together when pinched. If necessary, add more water. Turn the dough onto your work surface and gather into a ball. Divide the dough in half, flattening each half into a disk, cover with plastic wrap, and refrigerate for about one hour. After the dough has chilled sufficiently, remove one portion from the fridge and place on a lightly floured surface. Roll the pastry into a 12 inch (30 cm) circle. (To prevent the pastry from sticking to the counter and to ensure uniform thickness, keep lifting up and turning the pastry a quarter turn as you roll.) Fold the dough in half and gently transfer to a 9 inch (23 cm) pie pan. Trim the pastry to an edge of 1/2 inch (1.5 cm). Cover and refrigerate while you make the filling. Remove the second round of pastry and roll it into a 13 inch (30 cm) circle. Using a pastry wheel or sharp knife, cut the pastry into 3/4 inch (2 cm) strips. Place the strips of pastry on a parchment lined baking sheet, cover with plastic wrap, and place in the fridge for about 10 mins.

Preheat the oven to 400 degrees F (205 degrees C) and place the oven rack in the lower third of the oven. Put a baking sheet on the oven rack.

Berry Filling: In a bowl mix together the sugar, cornstarch, lemon juice and zest. Place the berries in a large bowl.  Add the sugar mixture to the berries and gently toss to combine. Pour the mixture into the prepared pie shell and dot with butter. Lightly brush the rim of the pastry shell with cream. Remove the lattice pastry from the refrigerator and, starting at the center with the longest strips and working outwards, space the strips about 1 inch (2.5 cm) apart. Use the shortest pastry strips at the outer edges. Then, rotate pie plate a quarter turn, and repeat the process with the rest of the strips. Weave the top strips over and under the bottom strips. Trim the edges of the strips, leaving a 1 inch (2.5 cm) overhang. Seal the edges of the pastry strips by folding them under the bottom pastry crust and flute the edges of the pastry. Brush the lattice pastry with milk and sprinkle with a little sugar. Bake the pie for about 20 minutes and then reduce the oven temperature to 350 degrees F (177 degrees C). Continue to bake the pie for about 35 - 45 minutes or until the crust is a deep golden brown color and the juices are bubbling. If the edges of the pie are browning too much during baking, cover with a foil ring or foil. Place the baked pie on a wire rack to cool for several hours. Serve with softly whipped cream or vanilla ice cream. Store any leftovers for 2 - 3 days at room temperature. Makes one 9 inch (23 cm) pie.