Tip: click step to get into cook mode
Soak the bread in water in a small bowl.
Blitz the walnuts, onion, red pepper and tomato pastes, cumin and a pinch of salt in a food processor. Squeeze the excess water out of the bread and crumble it into the food processor, add the extra-virgin olive oil and water, and blitz to a smooth spread. If it appears to be too thick, add a little more olive oil. Check the seasoning, adding more salt to taste.
Transfer the spread to a small serving plate or bowl. Drizzle with a generous amount of extra-virgin olive oil all over and sprinkle with pul biber. Serve with flatbreads or crackers.