Gather tied meat and bones in a pot.
Add gradually cold water.
Add coarse salt.
Bring to a boil...
...and skim.
Caramelize the onions on the stove griddle.
If no griddle, caramelize in a frying pan until the flat surface of the onions are black. Prick the onions with 2 cloves.
Add the whole aromatic garnish to the pot.
Cook regularly and slowly for three hours.
When finished, remove the meat and reserve for another preparation.
Pass the contents of the pot through a chinois or a thin sieve.
Leave to cool completely and store the pot in the fridge...
...to cool the fats that float up to the surface.
Remove the layer of fats using a spoon...
...so that we obtain a lean mixture.
Proceed to the clarification of the mixture.
Adjust seasoning and keep warm in a bain-marie.