VEGETARIAN SPLIT PEA SOUP

INGREDIENTS 18 cups liquid (broth, water, stock or combination) 1 lb split peas, picked over 1 medium onion, chopped 3 TBSP butter 2 cloves garlic, chopped finely ¼ cup chopped fresh parsley, or 1/8 cup dried ½ tsp dried basil 1/4 lb quinoa, rinsed (brown rice or barley will do as well) 1 bay leaf 4 large potatoes, diced (can be any potato variety, I like to do half sweet potato) One 10 oz bag fresh spinach, rinsed, trimmed…