Do you mean virgin sauce (sauce vierge)?
It's olive oil / butter, mustard, parsley / thyme, capers, olives, often anchovies, and some other aromatic herbs.
But here is someone who claims to have found the recipe: http://www.nogarlicnoonions.com/lentrecote-restaurant-famous...
* One chicken liver
* One shallot
* One sprig fresh thyme, tarragon, parsley
* 10 cl of liquid cream
* One tablespoon of Dijon mustard
* 20 g butter
* 3 cups of water
Do you mean virgin sauce (sauce vierge)?
It's olive oil / butter, mustard, parsley / thyme, capers, olives, often anchovies, and some other aromatic herbs.