Cut the peppers, onions, carrots and potatoes into small pieces, squeeze the garlic and fry everything in the olive oil. Then pour in the broth and cook for about 30-45 minutes. When the vegetables are soft, puree everything with the hand blender and add the milk or, if you like it more substantial, the cream. Possibly Season a little more with salt and pepper. Depends on how strong the broth is.
This soup is both low in calories and low in carbohydrates and therefore also ideal for diabetics.