2 Make tomato sauce
Meanwhile, peel and chop the onion. Peel and crush the garlic. Heat a pan with olive oil over a medium heat. Add the onion and fry with a pinch of salt for 5 min. Add the garlic and the tomato paste and cook for 2 min. Add the chopped tomatoes, chilli flakes, cinnamon stick and brown sugar. Simmer for 15-20 min, covered. Season with salt and pepper to taste.