Blueberry Basic Pie Filling (The following recipe is very good to keep on hand in the refrigerator. It may be used in crepes, fried pies, regular pies, over ice cream, etc. Guaranteed to be good.) 3 pies: 12 c. blueberries 3 c. sugar 1 c. cornstarch 3/4 c. lemon juice 1 pie: 4 c. blueberries 1 c. sugar 1/3 c. cornstarch 1/4 c. lemon juice Mix berries, sugar and lemon juice in a heavy saucepan. Bring to boil, stirring frequently. Mix cornstarch with enough water to make a paste. Pour into the berry mixture, stirring constantly until thick. Cool. Pour into unbaked pie shell and bake at 400 degrees for about 35 minutes or until crust is golden.