Crumble sausage and brown it in a skillet. Drain fat and set the sausage aside.
Heat olive oil in a large pot over medium heat. Add onion, carrots, and celery and cook, stirring occasionally, for 8-10 minutes or until onions are softened.
Add potatoes, 5 cups of stock, and spelled. Turn up heat, bring to a boil, then reduce heat and simmer uncovered for 30-45 minutes or until spelt is tender.
When spelled is tender, add sausage, spinach and fresh herbs. Add more stock if necessary or desired, bring soup back up to a simmer and let cook for another 15 minutes. Season to taste with salt and pepper.