In a 3 litre pot, bring chickpeas, kombu and soaking water to a boil. Cover, reduce heat to medium and boil for 2 hours. Add water as necessary so that water just covers the chickpeas. Remove 2 c. liquid from the pot and set aside in a 2 litre pot. Place onions, carrots and turnips on top of the chickpeas and add enough water or stock to just cover vegetables. Add salt, garlic, bay, cumin, pepper and olive oil. Cover and bring to a boil. Reduce to light boil and cook for 40 minutes. Add Brussels sprouts and cook an additional 10 minutes. Adjust seasoning. While vegetables and chickpeas continue to cook, add 2 c. water and salt to the stock in the 2 litre pot and bring to a boil. Heat a thin pan, add oil and, while stirring continuously, toast quinoa for 10 minutes. Add to boiling stock, cover and simmer 15 to 20 minutes. Remove from heat. Allow to sit for 5 to 10 minutes. Gently mix from top to bottom with a damp wooden spoon. Cover pot and allow to rest for another 5 to 10 minutes. Serve by placing a large mound of quinoa on each individual plate. Flatten the mound in the center and fill with vegetables and chickpeas. Pour half c. of hot stock over all and serve hot.