Lentil and Tomato Pasta Sauce

In a saucepan, fry the onion and garlic in the olive oil until soft.

Add the lentils to saucepan with the vegetable stock, passata, soy sauce, henderson's relish and marmite, and bring to the boil. Add the garam masala and seasoning to taste.

Boil rapidly for 10 minutes, uncovered.

Reduce the heat, cover and simmer for a further 20 - 25 minutes, stirring from time to time. Add the pine nuts, if using, 10 minutes before the end. Add more boiling water if necessary.

Meanwhile, cook your pasta. When the pasta and sauce are ready, mix them together until the pasta is coated. Serve.