1.Heat oil in a stockpot on high. Saute leek, carrot, celery, potato and garlic 3-4 minutes, until tender.
2.Stir in stock and bring to the boil. Add chicken wings and reduce heat to low. Simmer, covered, 30 minutes. Add pasta and simmer 12-15 minutes, until pasta is tender.
3.Stir in corn and season to taste. Simmer a further 2-3 minutes. Serve sprinkled with parsley.
If scum or fat appears on the surface of the soup as it cooks, remove it by blotting with a paper towel. Another option is to chill the cooked soup overnight to allow solids to harden on the surface, then remove the fat with a spoon and reheat the soup before serving.