Tips and notes
1 The pan must be properly heated before cooking the duck liver. If it's not hot enough, the duck liver can easily become overcooked.
2 Avoid overcooking the duck liver, as it will lose its tender, melt-in-your-mouth texture.
3 If brioche is not available, you can substitute it with a French baguette.
4 if truffle sauce is not available, you can replace it with butter