- 8 tbsp extra virgin olive oil
- 4 celery sticks, finely chopped
- 2 carrots, finely chopped
- 1 medium onion, finely chopped
- 2 cloves garlic, crushed
- 1 sprig rosemary
- 4 bay leaves
- salt and freshly ground black pepper
- Heat the olive oil in a saucepan and gently fry the celery, carrot, onion, garlic, rosemary and bay leaves until golden, about 15 minutes.
- Remove the rosemary sprig and bay leaves and season with salt and freshly ground black pepper. Use accordingly.