unlike a cobbler or crisp, a grunt cooks start to finish on the stovetop. Stewed, spiced berries are topped with dollops of biscuit dough, covered, and cooked until the dumplings are done. The technique can be traced to 1807, when recipes cooked sweetened dumpling dough in water to make quick puddings. It eventually evolved into the grunt, a name given for the sound the fruit may as it bubbled beneath the dumplings. Blueberry crêpes are particularly popular in New England and Nova Scotia.Unknown source
for the filling, cook 4 cups of the blueberries, the sugar, water, lemon zest and cinnamon in a Dutch oven over medium-high heat, stirring occasionally, until the mixture is thick and jam -- like, 10 to 12 minutes. Whisk the lemon juice and cornstarch together in a small bowl, then stir into the blueberry mixture. Stir in the remaining 4 cups blueberries and cook until heated through, about one minute. Cover to keep warm and let set off the heat.
For the topping, mix the buttermilk, melted butter, and vanilla in a measuring cup. Whisk the flour, 6 tablespoons of the sugar the baking powder, baking soda and salt together in a large bowl. Slowly stir the buttermilk mixture into the flour mixture until dough forms.
Using a small ice cream scoop or two large spoons, spoon golf ball sized dumplings on top of the warm blueberry mixture. You should have 14 dumplings. Wrap the lid of the Dutch oven with a clean kitchen towel, keeping the towel away from heat source, and cover the pot. Simmer gently until the dumplings have doubled in size and a toothpick inserted into the center comes out clean, 16 to 22 minutes.
Combine the cinnamon and the remaining 2 tablespoon sugar in a bowl. Uncover the pot and sprinkle the dumplings evenly with the cinnamon sugar. Serve.