Blackberry Pie

Ingredients

 * 2 quarts of fresh blackberries
 * 3 cups of sugar
 * 1 tablespoon of flour
 * double-crust pastry shell
 * 2 tablespoons of butter

Directions

 * 1) Mix blackberries with sugar and let mixture set about one hour; cook on medium-low heat until mixture is clear or until it reaches 220°F on a candy thermometer.
 * 2) Sprinkle flour on the bottom of the pie crust; pour in blackberry filling and dot with butter.
 * 3) Top with a lattice crust; bake at 375°F for about 25 minutes or until crust is golden brown.