Pasta E Fagioli Soup

Ingredients

• 1 lb. italian sausage, bulk
• 3 tbsp vegetable oil
• 3 red onions, finely chopped
• 3 cloves garlic, minced
• 1/2 tsp dried rosemary
• 2 quarts chicken broth
• 2 cans (15 oz ea) great northern or cannelli beans, drained
• 2 cans (15 oz ea) diced tomatoes, with juice
• 4 medium carrots, diced
• 4 stalks celery, diced
• 3/4 tsp salt
• 1/2 tsp pepper
• 1 cinnamon stick
• 1 cup water
• 1 cup ditalini pasta, cooked and drained
• 2 tsp red wine vinegar
• grated parmigiano-reggiano for garnish