La Carabaccia Modern Version

• 2 lb 2 oz/1 kg onions, finely sliced
• several leaves basil,

Heat the oil in a large pan. Cook the carrots, celery and basil in it for 5 minutes. Add the onions, cover and cook gently for at least an hour, adding about a third of the stock as necessary to keep the mixture moist. After an hour raise the heat and add a couple of splashes of white wine. When it h