Clean and wash spring onions and cut them diagonally into rings. Leave bacon in a pot until crispy. Take out, slices still hot turn into spirals. Keep bacon warm
Sauté the spring onion rings in the hot bacon fat for approx. 3 minutes, except for a little to garnish. Add tomatoes and stock, bring to the boil and simmer for 15-20 minutes. Mash the tomatoes with a mixing spoon. Season soup with salt, pepper and sugar
Stir sour cream and whipped cream with a whisk until smooth. Arrange the tomato soup in small bowls. Add the cream mixture in streaks to the soup. Garnish the tomato soup with the bacon spirals and remaining spring onion rings