Onions peel and cut into pieces. Clean and peel the carrots. Cut 1 carrot into pieces. Heat oil in a pot. Add onions, diced carrots and peas and fry briefly. Pour in broth. Soup covered simmer for about 1 1/4 hours.
After about 1 hour add the whole carrot and cook it. As soon as the peas are soft and crumble, remove the whole carrot from the soup and cut into small cubes. Add horseradish to the soup and puree it with a hand blender. Cut the turkey breast into thin strips. Wash the parsley, dab dry and cut the leaves into strips. Bring the soup to the boil, season with salt and pepper and fill into 4 bowls. Put 1 teaspoon of crème légère on each soup and decorate with carrot cubes, turkey strips and parsley