What sauce is on Japanese foie gras?

The delicate and full foie gras melts on the tip of the tongue like chocolate, and the rich aroma lingers on the tip of the tongue and throat. Whether it is Caesar's favorite fig foie gras or the foie gras with toast in an appetizer, this delicious food that melts in the mouth at 35℃ is favored by consumers in France, Japan and other countries. Along with caviar and truffles, foie gras has been praised as "three great delicacies in the world" by the food industry and "tango in the mouth and ballet on the tip of the tongue" by gourmets who love food.