Wash the fish heads under cold running water.
Meanwhile, peel wash and finely the carotts, onions and shallots. Prepare a bouquet garni.
Melt 50 g butter in a pot. Make the vegetables without browning for 4 to 5 minutes.
Drain and crush the fish heads. Add to the previous mix.
Make it sweat again for 4 to 5 minutes.
with white wine. with 6 dl water.
Add the bouquet garni.
Bring to a boiling point.
frequently.
Simmer slowly without the lid and over low heat for 20-25 minutes. Do not add salt.
Filter through a when finished. Press the bones with a small ladle to extract all the juices.
Cool down quickly and keep refrigerated.