Sausage and Green Pea Cavatelli

Ingredients

• • 2 celery stalks, diced
  • 2 carrots, diced
  • 2 garlic cloves, chopped
  • 1 medium leek, diced
  • 3 tbsp (45 ml) olive oil
  • 2 Italian sausages, casings removed
  • 2 tbsp unbleached all-purpose flour
  • 8 cups (2 litres) chicken broth
  • 3/4 lb (340 g) cavatelli (or other short pasta)
  • 1 cup (150 g) frozen peas, thawed
  • 1 cup (70 g) Parmesan cheese, freshly grated