Blackberry Pie

Directions

1. 1
   Whisk the potato starch and sugar together and set aside.
2. 2
   Put 1 cup of the berries in a small saucepan and mash them with a fork.
3. 3
   Cook and stir over medium heat for about 7 minutes, until the berries begin to break down and release their juice.
4. 4
   Stir the cornstarch mixture into the berries and cook and stir until thick and bubbling and the sugar is dissolved, about 7 minutes.
5. 5
   The mixture should coat a spoon and a line drawn along the spoon will stay clear.
6. 6
   Cool until lukewarm.
7. 7
   Spread the remaining berries in the crust, then pour the cooked mixture over the berries and gently stir until evenly distributed.
8. 8
   Chill for 3 to 4 hours or overnight, until the filling is set.
9. 9
   Serve garnished with a dollop of whipped cream.