Its punchy, complex flavor is reminiscent of anise and fennel with a hint of fresh citrus. The natural first thought when reaching for a substitute for a fresh herb is its dried counterpart.
Place the ribs in a large, wide saucepan. Cover with water and add the onion, garlic, fennel seeds and star anise. Bring to a boil, then reduce the heat and simmer very gently for three hours ...
Add the celery and fennel and fry until softened. Season with salt and pepper. Add the tomatoes, smoked paprika, star anise, saffron and tomato purée. Stir and cook for 5–10 minutes to soften.