Over a moderate heat, soften onions and celery, add garlic and bacon and fry until cooked.

Add mince, this can either be done in batches or else all at the same time, depending on the size of your pan. Let cook through for a few mins, drain the fat if needed carefully, there can be quite a lot depending on what kind of mince you are using.

Stir in tomato puree, let cook for a minute and then add the tinned tomatoes. I use 2 tins and some water if you like a thinner sauce. Season lightly and let simmer for 10 minutes.

Add the herbs and sugar, these can be added according to taste. Let simmer for another 10 mins and adjust seasoning. Add mushrooms near the end of cooking, giving them a chance to soften but still keep their shape.

Serve with spaghetti straight away.