2 cups flour
1 tsp salt
2/3 cup shortening
1/3 cup + 1 Tbsp cold water
1 egg yolk mixed with 1 to 2 Tbsp water
5 cups frozen Maine blueberries
3 Tbsp flour
1/2 cup sugar
1/2 to 1 tsp lemon juice
1 1/2 Tbsp butter
Mix the flour and salt. Cut the shortening into the flour. When distributed, add water and mix. Roll the crust to fit a 9-inch pie plate. (Makes enough for a 2-crust pie.)
Wash the berries and remove any stems. Toss with the dry ingredients. Sprinkle with lemon juice to taste. Arrange the berries in the bottom crust. Distribute dots of butter over the top. Cover with the top crust. Crimp edges. Brush on egg wash and cut air vents in the top crust. Bake at 400F for 40 minutes.
NOTE: You can buy frozen Maine blueberries in most grocery stores; they have the best flavor. If you use cultivated blueberries, they have more water; add 3 or 3 1/2 tablespoons of thickening, such as flour. Makes one double-crust pie.