Roll out half of pastry and cut into 1 inch wide strips. Place on a cookie sheet and bake at 450 degrees about 8 minutes or until lightly browned. Combine blackberries, sugar, nutmeg, vinegar, and water; spoon half into a 3 quart baking dish and dot with 2 tablespoons butter. Place baked pastry strips on top. Cover with remaining berry mixture and dot with remaining 2 tablespoons butter.
Roll out remaining pastry and cut into 1 inch wide strips; arrange lattice- fashion on top of cobbler. Bake at 425 degrees for 15 to 20 minutes or until lightly browned. Reduce heat to 300 degrees and bake 1 hour. Yield: 8 servings.
