Heat 2 tbsp olive oil in large frying pan. Add the onions, garlic and celery', cook for approximately 3-4 minutes stirring occasionally.
Slice the aubergines into thick rounds and then cut each round into 4 pieces.
Add the aubergines or eggplant to the frying pan with the remaining olive oil and fry for 5 minutes or until golden brown.
Add the tomatoes, olives and sugar to the pan, stirring until all the sugar has dissolved.
Add the red wine vinegar, reduce the heat and simmer for about 10-15 minutes or until the sauce thickens.
While the pan is still on the heat, add the capers and season to taste.
Remove from heat and allow cooling before serving, sprinkling with parsley to serve.
This Salad is best served cold the day after it is made, which allows all the flavors to mingle and be fully absorbed.