03Combine the blackberries, sugar, water and ginger in a large mixing bowl. Pour the mixture into a 10-inch cast iron skillet and place over medium heat. Bring this to a simmer decrease the heat to medium low and continue to cook, stirring occasionally, for 15 minutes, or until the liquid is thick enough to coat the back of a spoon. Retrieve the dough from the refrigerator and gently drop it on the fruit mixture using a 1-ounce disher or large spoon, evenly distributing it over the top. Bake in the oven for 15 to 20 minutes, or until the top is just starting to brown. Remove from the oven and allow the grunt to cool for 15 to 30 minutes before serving.