Begin with making your duck broth. Give all vegetables a good wash, making sure they are free of any dirt. Coarsely chop the onion, carrot, celery and leek into 2.5cm pieces.
Heat the vegetable oil in a stockpot over medium-high heat. Add the onion, carrot, celery, leek and garlic. Cook, stirring occasionally, for 8-10 minutes or until golden. Add the duck bone