Ingredients for 4 servings

  • 4 kg of New Zealand mussels
  • 5 branches of green celery
  • 1 bunch of flat parsley
  • 10 sprigs of chives
  • 2 onions
  • 2 tablespoons of butter
  • 1 tablespoon of mustard
  • 1 bay leaf
  • black pepper (freshly ground)
  • salt
  • crème fraîche