1) Fry the sausages until cooked through. 2) Take them out the pan and add the potatoes, carrots and herbs. Turn the heat down low, cover with a lid and leave to cook for 10-15 minutes. 3) Add the tomatoes, puree, sweetcorn and sausages. 4) Stir and bring to the boil. Turn the heat back down, cover and leave again to simmer for about 20 minutes until all piping hot.