Bumbleberry pie (Canadian cuisine)

Bumbleberry pie (Canadian cuisine): Bumbleberry pie (Bumbleberry pie) is a Canadian mixed berry pie.
Its filling is made from at least three types of berries, but usually refers to a mixed berry pie, as there are no berries named "bumbleberry".
Berries traditionally used in this pie can also include blueberries, raspberries, strawberries and wild strawberries and blackberries.
Pie can also be made...