What's the best Foie Gras restaurant in Paris that's not too formal?

Related Questions

• Best medium priced restaurants in left bank area
  over 10 years ago about Paris, Ile-de-France, France
• Which is a good Indian restaurant in Paris ?
  almost 8 years ago about Paris, Ile-de-France, France
• I would like a good restaurant recommendation in the Opera district in Paris.
  over 7 years ago about Paris, Ile-de-France, France
• What are the most romantics restaurants?
  over 10 years ago about Paris, Paris, Ile-de-France, France
• Going to Paris in September. Looking for off the beaten path cafes or restaurants?
  about 8 years ago about Paris, Ile-de-France, France