1/2cupdate syrup, maple syrup, or other liquid sweetener
additional syrup or agave nectar to taste
Preheat oven to 350 F. In a medium bowl, mix flour, cocoa powder, baking powder, baking soda, chia (or flax) and salt. In blender, combine water, 1/2 cup blueberries, and balsamic vinegar and blend until smooth.
Make a well in the dry ingredients. Add the syrup and the blueberry mixture. Stir until completely mixed. Pour into an oiled 9-inch round cake pan.
Bake 30 minutes or until a toothpick inserted in center comes out clean. Cool completely before inverting onto serving platter.
Serve with blueberries on top, drizzled with additional syrup or agave. (I recommend agave for drizzling.)