Heat 1 Tbsp oil in a large soup pot or Dutch oven. Add chopped bacon and sautee until browned then remove with a slotted spoon and reserve.
Add finely chopped celery and onion. Saute until softened and golden (5 min).
Add sliced carrots, potatoes, ¼ cup quinoa (if using), 8 cups broth and 2 cups water. Bring to a boil then reduce heat and simmer 15 min.
Add 2-3 cups of well rinsed and drained sauerkraut and half of cooked bacon (I keep some for garnish), white beans with their juice, and 1 bay leaf and continue to cook until potatoes are tender (about 10 min). Season soup to taste (I added ½ tsp salt, ¼ tsp pepper and ½ tsp Mrs Dash). Serve with fresh crusty bread.