It is unsanitary to put hair in food.
Marcel is cooking for a critic who gave the restaurant a bad review last time she was here, but he was not.
Marcel wants to show the critic who is in charge of the kitchen.
Marcel takes his time and perfects the dish he is serving to the critic.
Marcel adds a single strand of hair to the pasta.
The critic writes a positive review, admitting she was too hasty in the first review.
The critic writes another scathing review about the quality and handling of the food.