This soup makes a wonderful light dinner in the summer time with some good-quality bread – the drizzle of homemade basil oil adds a hit of Mediterranean flavour. (This video also demonstrates the winter vegetable soup.)
4 large ripe vine tomatoes, skinned, quartered, seeds removed
1 tbsp olive oil (not extra virgin)
1 small onion, finely chopped
1 stick celery, trimmed and finely sliced
2 garlic cloves, finely sliced
1 slender, young leek, trimmed and finely sliced
3 small courgettes, trimmed and cut into 1cm/½in dice
50g/1¾oz dried spaghetti
1 tbsp tomato purée
200g/7oz fresh peas (or frozen out of season)
200g/7oz freshly podded baby broad beans (or frozen out of season)
200g/7oz green beans, trimmed and cut into 1cm/½in lengths
To make the basil oil, strip the basil leaves from the stalks and place in a large heatproof bowl. Half fill a large bowl with cold water and add a few ice cubes. Boil a kettle full of fresh water and pour over the basil. Immediately drain in a colander and plunge into the bowl of iced water. This will help set the vibrant green colour. Leave for five minutes.
Drain the cooled basil leaves in a colander and tip out onto a clean tea towel. Pat gently until as dry as possible then tip into a jug. Add the oil and blend to a purée using a stick blender. (You can also do this in a small food processor.) Season with salt and freshly ground black pepper. Pour into a small bowl and set aside for at least 30 minutes. (You can then press the basil and oil through a fine sieve if you like, or leave it just as it is.)
To prepare the soup, heat the oil in a large non-stick saucepan or frying pan and fry the onion and celery very gently for five minutes, or until softened but not coloured, stirring often. While the onion is cooking, Cut the tomato flesh into roughly 1cm/½in pieces.
Add the garlic, leek and courgettes to the pan with the onion. Stir over a low heat for a minute or two, then stir in the freshly chopped tomatoes. Pour over the chicken stock and bring to the boil.
Break the spaghetti into 2-3cm/1in short lengths and drop into the pan. Add the tomato purée and return to the boil. Cook for eight minutes, stirring occasionally. Add the peas, broad and green beans and cook for a further five minutes, or until the pasta is just tender.
Season the soup with salt and lots of freshly ground black pepper. Serve in deep bowls.
Drizzle with the basil oil and either grate or shave the parmesan with a vegetable peeler over the top. (Any leftover basil oil can be covered and kept in the fridge for three days. Allow stand at room temperature before using.)
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