In these cases, you can substitute ketchup for tomato sauce in a one-to-one ratio ... Salty and savory additions like Worcestershire, soy, tamari, or a bit of bouillon are great too — just exercise ...
Heat the olive oil in a wide shallow pan over a medium heat. Add the onions and garlic and sauté for 15 minutes, stirring every now and then, until soft and sweet and very lightly golden-brown ...
Heat the oil in a frying pan and fry the onion, garlic and chilli until soft. Add the tomatoes and mix well. Add the vinegar and sugar and bring to the boil. Simmer for 30 minutes and season with ...
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