The Wing or The Thigh? (1976)

Charles Duchemin, a well-known gourmet and the publisher of a famous restaurant guide, is waging a war against fast-food entrepreneur Tricatel to save the French art of cooking. After having agreed to appear on a talk show to show his skills in naming food and wine by taste, he is confronted with two disasters: his son wants to become a clown rather than a restaurant tester and he, the famous Charles Duchemin, has lost his taste.