Combine milk, water, and quinoa in a medium saucepan. Bring to a boil, then reduce heat to low, cover and simmer for 15 minutes. Turn off heat and let sit for 5 minutes. Stir in cinnamon and cardamon. Spoon into bowls, and top with blackberries and toasted pecans. Drizzle on maple syrup. Serve with more milk if desired.