In a small bowl stir together the yeast, warm water, and brown sugar. Set it aside until it becomes frothy.
Stir together the flour, salt, baking powder, and baking soda in a large bowl.
Add the sour cream and oil to the yeast mixture. Pour this in with the flour and stir until combined. Cover with a kitchen towel and place in a warm place in the kitchen. Set aside to rise for about 45 minutes.
Once the dough has doubled, add some flour in a small bowl. Spray a baking pan with vegetable spray. Punch down the dough and make 8 to 10 balls that are approximately the size of a golf ball. Use the flour to help shape the balls because the dough will be sticky (which is what you want). Set these on the pan and set aside to rise another 30 minutes.
When you're ready to bake, preheat the oven to 350°F.
Flatten the dough balls into small, flat pieces, about 6" in diameter. Place on the prepared and bake for 4 to 5 minutes. Use tongs to flip the bread when they're golden brown on one side. Bake for another 4 to 5 minutes on the other side.