Now you have various options; eat the soup as is, which might seem a bit dour. Or, in a frying pan, render your small chunks of salted fatback on not too high a heat, so that you end up with crispy nuduals of salty pork fat to top off the soup. But our possibilities do not end there. You could instead shear off a generous slice of fresh foie gras per bowl of soup, pop on top of the hot soup and give it a few minutes to do a little melting, then eat.