Preheat your oven to 200°C.
Cut the tomatoes and onion in fourths and add to a baking dish.
Peel 5 cloves of garlic and add to the baking dish as well.
Add sugar, pepper, salt, herb seasoning, olive oil and balsamic vinegar on the veggies.
Bake the veggies in the oven for 25mins.
In the meantime peel the potatoes and cut into fourths.
Take one celery stick and cut it in two.
Heat up 1l of chicken stock in a pot. When it starts boiling add the potatoes and celery and boil for 20mins.
After 25mins take the veggies out of the oven. When the potatoes are done boiling add the veggies from the oven to the pot and simmer everything for 5 more minutes.
Mix everything with a hand mixer.
Add 100ml of heavy cream and mix well again.
Enjoy your soup!