Combine flour, shortening, sugar, and salt. Work together with a fork until consistency is pebbly
In a separate small mixing bowl, beat egg and add water and vinegar, beat again. Add liquid mixture to flour and shortening. Stir with fork and combine thoroughly and form into a ball then roll out on a floured surface.
for the filling
Combine all ingredients, gently fold scraping along sides of bowl to avoid crushing the berries.
Place filling in a dough-lined pie dish. Bake for 40 to 45 minutes or until crust is golden brown.
Variations in relative humidity can affect quantity of water necessary to form and roll dough. Don't be afraid to add small amounts of water to achieved desired consistency. Be generous with the amount of flour used on rolling surface. To place crust in pan, roll it on pin, place pin over pan and then unroll. Brush an egg wash over the top crust prior to baking. This provides a rich, brown glaze.