Boil the tomatoes in a pot with water. Peel them, remove the seeds, and blend the pulp with the oil until you get a smooth sauce.
Cut the fennel into cubes after removing the outer leaves. Wash it.
Remove the filaments from the celery and wash it.
Peel the garlic and spring onion and chop everything together.
Cut the cucumber into small cubes after peeling it.
Wash the peppers, remove the seeds, and cut into cubes.
In a bowl, combine vinegar with pepper, salt, and chili pepper.
Pour the blended tomatoes into a soup bowl. Add all the prepared vegetables. Season with salt, pepper, and vinegar. Mix.
Put the soup in the fridge for about 2 hours.
Before serving, take it out of the fridge and let it rest for about 30 minutes.
Serve and garnish with chives.