To make the filling, slip the skins off the grapes and reserve them. Put the grape pulp in a saucepan and simmer over medium-low heat just until soft enough to release the seeds, about 8 minutes. Push the grape pulp through a wire-mesh strainer to remove the seeds. Combine the pulp in a bowl with the reserved grape skins.

***This recipe could be canned instead of making a pie right away. Follow the directions for your canner for processing in the water bath.

Use your favorite double crust recipe or you can use an oatmeal or crumble crust topping.

Roll out each ball of dough on a well-floured board until they are 10 to 11 inches in diameter. Line the bottom of a 9-inch pie pan with a round of dough. Preheat the over to 450ºF. Mix the sugar, salt, and tapioca together in a bowl and spread about half of the mixture with the grapes and add the lemon juice. Pour the pie filling into the crust and dot with butter. Cover with the top crust and crimp the edges to seal. Bake for 10 minutes and then lower the temperature to 350ºF and bake for another 25 to 30 minutes, until golden brown. Remove from the oven and cool for 30 minutes before serving. If not serving immediately, warm the pie in an oven set on the lowest temperature for 10 minutes before serving.