Peel and finely dice the onion and garlic. Wash, clean and quarter the tomatoes. Heat the fat in a saucepan. Fry onion and garlic briefly. Add tomatoes and cook for 6-8 minutes. Add tomato paste and mix. Deglaze with stock and bring to the boil while stirring.
Pour through a sieve and strain. Bring to the boil again and season with gin, salt and pepper. Mix crème fraîche and cream. Wash oregano, dab dry and pluck leaves from the stalk. Pour soup into bowls. Add a dash of crème fraîche to each bowl and serve sprinkled with oregano leaves and coarse pepper.