Pour olive oil into a saucepan, add finely chopped onion, and simmer until tender. Then you need to pour water, add bay leaf and let it boil.
After boiling add diced potatoes, and cook until tender under the lid.
Then put salmon peeled and cut into pieces and cook for another 5 minutes.
Combine the remaining water with starch and add to the pan. After this, pour in the cream and mix.
When the soup thickens, add oil and spices to taste. Sprinkle with herbs before serving.