Hidden vegetable pasta sauce

1 Heat two tablespoons of olive oil in a large heavy-based pan. Add the onion and sauté over a medium heat until it is beginning to soften. Add the garlic and stir well. Cook for a minute before adding the remaining vegetables. Cook for five minutes, stirring every few minutes.

2 Next add the white wine and stir everything well. Add the tinned tomatoes and stock. Season with the herbs, sugar, salt and pepper. Bring to a simmer then lower the heat and leave to simmer gently until the vegetables are all well cooked, 15-20 minutes.

3 Leave to cool a little then blitz the sauce until very smooth using a stick blender or in a blender jug. I find the blender jug gives a smoother sauce. Taste for seasoning.

4 Portion out the sauce. This is enough for 12 servings, so I usually pour it into 500ml jars. Leave a little space at the top if you plan on freezing it.