Peel the potatoes and cut them into cubes, chop the onions arbitrarily, and sort the cabbage into inflorescences. Put all the vegetables in a pan, add rosemary, salt and pepper to taste. Pour water so that it covers all the vegetables. Cook after boiling for 30-40 minutes or until potatoes are ready.
Remove the rosemary from the pan, and beat the vegetables with mashed blender. Pour in the cream and whisk again.
Serve the soup hot, very tasty with croutons or crackers.
Parmantier onion soup is very fragrant, delicate and delicious. Cooking such a soup is very simple, it is perfect for the whole family and especially for children. You can take cream of any fat content, in principle any onion is suitable for making such a soup, but leek has a delicate taste and does not have a pungent odor. Cauliflower add satiety to the soup, it can be replaced with other neutral vegetables such as zucchini.