Step 1

Heat the oil in a large saucepan, then fry the onion and celery gently for 10 mins until softened, stirring frequently. Tip in the cumin and fry for another min.

Step 2

Turn up the heat, then add the stock, tomatoes and chickpeas, plus a good grind of black pepper. Simmer for 8 mins. Throw in broad beans and lemon juice, cook for a further 2 mins. Season to taste, then top with a sprinkling of lemon zest and chopped herbs. Serve with flatbread.