Pull out all the nerves from the foie gras. ( taking long time for doing this.)
2
Place your piece on a sheet plastic wrap then make your seasoning ( salt, pepper, Porto). Close your piece into the plastic wrap and tie knots at the 2 ends.
3
Wrap the piece in a towel, then dip them in frissonate water.( 25min)
4
Remove your piece and them cool outside and put in refrigerator at least 48hours.(5 days.) Take out all fat from the foie gras.