Many Japanese men profess that the sight of a woman using her ohashi (お箸, chopsticks) properly and eating happily from a bowl of rice is a huge turn-on.
Consider the traditional meshi mori onna (飯盛り女, rice-serving women) who worked in rural inns well into the 20th century. On the surface, their job was to ladle the rice and pour out the tea. If during this brief interlude the woman and the traveler guest were to hit it off, she would sneak into his room at night. It wasn’t outright prostitution but an exchange that involved rice along with cash and sex. The first factor neutralized the other factors and made it less cold and business-like. Which leads me to a personal conviction that most Japanese relationships involve a bowl of rice somewhere.