Growing up, I always knew pie meant one thing…jam roll. I’m not sure where the tradition started, but I remember my English grandmother and my mom making them  – often using strawberry or raspberry jam as the filling. It’s a completely genius way to use up scraps of pastry left over from pastry making and there’s something so right about warm jam between a crispy layer of pastry. Here’s how it’s done.     1. Reform your pastry scraps into a ball and roll out to 1/8″-1/4″ thick. 2. Spread a thin layer of jam over the pastry bringing it almost to the edges. To keep it added sugar…