Sauté the onion and garlic together with the spices.
Pour in the milk, add the fish, bring it to a boil and then lower the heat.
Simmer until tender.
When the fish is tender, take out the spices and pour everything into a Thermomix®.
Blend until light and creamy.
Add some gelatine in the end.
Strain all the ingredients through a fine strainer and combine with the Culinaire Original into a mousse.
Pour into a silicone mould and let it cool.