Peel, quarter and chop the onion. Fry in hot oil. Stir in tomato paste. Sprinkle with flour and sweat. Deglaze with stock and tomatoes. Simmer for about 10 minutes while stirring frequently, season
Wash the basil and cut finely, except for a few leaves for garnishing. Wash tomatoes and cut into pieces
Puree the soup. Stir in the cream, gin and basil, bring to the boil briefly. Season to taste with salt, pepper and sugar. Heat the tomato pieces in the soup. Add crème fraîche as a blob and garnish with the rest of the basil