Avocado Oranges

• 2 medium-size oranges
• 1 tablespoon (15 ml spoon) white wine vinegar

Cut the oranges in half across. Using a small, sharp knife carefully cut and scoop the orange flesh and juices out into a bowl, discarding the seeds and pith. Put the vinegar, the olive oil and the mustard in a jam jar with a lid and season well with salt and black pepper. Put the lid on the jar and shake up to mix; then add the orange flesh. Cut the avocado in half and scoop out the flesh with