Preheat the oven to 190°C fan-forced (200°C conventional). Remove the duck from the packaging and place it onto a lightly oiled baking tray. Place it in the oven and cook for 15 minutes. Remove it from the oven and let it rest for 5 minutes before slicing.
Meanwhile, prepare the dressing. Place all the ingredients into a small jar and shake well to combine.
Place the noodles and snow peas into a large bowl. Reserve 1 tablespoon of the dressing and pour the remaining dressing over the noodles. Toss to combine.