Smoke the fish bones with hay for 5 minutes.
Roast the fish bones with oil for few minutes.
Add butter and roast them again.
Add the celery stalks, carrots and shallots to create the aromatic garnish.
Brown until it is soft.
Add white wine and water.
Cook for 1 hour and 15 minutes on a gentle boil.
Reduce the stock and add 1/3 of the weight obtained with the Cream Plus Mascarpone.