Chocolate’s reputation as an aphrodisiac is highly exaggerated, food researchers say. True, it does contain some chemicals like phenylethylamine, which produce feelings of euphoria. Yet one widely cited study showed that a 70 kg person would have to eat 10 kg of chocolate in one sitting to significantly alter the mood. But who would be in the mood after eating 19.2 percent of her weight in chocolate? Nor is it a good idea to talk your date into trying the black forest tart for dessert. One study found that the scent of cherries significantly decreases sexual arousal in women.