it's here he makes natto. he set up a small factory at his home. he makes natto by hand. the only soy beans he uses are organically grown. the home discovered natto 40 years ago. at first he was taking the pack by the smell. but it gradually won him over. he started eating the food every day. 17 years ago he returned to japan because he wanted to learn how to make his own natto. he chosic back ki prefecture where most natto is made. >> translator: it was really complicated. it took me a lot of time actually to master the cooking, everything. >> reporter: initially he sold the food to the japanese living in france, but the number of french buyers has been going up. he likes to experiment and trying now grand natto which is less sticky and easier to eat. he invites friends for a taste. laurent's paste spreads it on bread, they add tomato, radishes. a new kind of salad. >> translator: when i saw the natto, i didn't like the way it looked, but when i tasted it i thought it was delicious. it goes well with bread. >> translator: my dream is introducing natto to the people of fr

it's here that he makes natto. he set up a small factory in his home. he makes natto by hand. the only soybeans he uses are organically grown. he discovered natto for the kids when he was in tokyo. at first he was taken aback by the sight and smell. but ultimately, the unique taste won him over. he studied the food every day. 17 years ago, he returned to japan because he wanted to learn how to make his own natto. he chose the prefecture where most natto is made. >> translator: it was really complicated. it took me a lot of time, actually, to master the cooking, everything. >> reporter: eventually he saw the food go to japanese living in france, but many buyers have been the french. now he makes ground natto, which is less sticky and easier to eat. he invites friends for a taste. it is natto paste on bread. they add tomatoes, salad and radishes. voila, a new kind of salad. >> translator: when i saw the natto, i didn't like the way it looked. but when i tasted it, i thought it was delicious. it goes well with bread. >> translator: my dream is introducing natto to the people of f