1. Tear the stale bread into rough pieces and place on a tray. Leave aside in a warm place for around 30 minutes – this will help dry it out.
2. Chop the tomatoes, red onion and red pepper into small pieces.
3. Place the tomatoes in a bowl. Rinse the capers, squeezing out any excess liquid and add to the bowl, along with the onion, peppers and bread.
4. Toss the mixture together with your hands, then stir in 2 tablespoons of vinegar (if using) and about 3 times as much extra virgin olive oil. Taste and add a little more pepper, vinegar or oil, if needed.
5. Tear in the basil leaves, stir together and serve.
To serve: Cous cous (optional, if hungry)