Hollywood first use of chocolate as an erotic cinematic symbol. Jean Harlow in the 1935 film DINNER AT EIGHT. The chocolate box was specially designed for the film. Chocolate was long known as "the love drug," thanks to its serotonin and hundreds of other compounds. It was the first mind altering substance encountered by the Spanish and other Europeans. Chocolate was also a favorite of Casanova, Goethe, Sherlock Holmes, and many others real and fictional.