each batch is unique and hand-crafted, following a 150-year tradition that matthieu followed in franceen it came time to open up op here in the states, there was no question on where to go. >> well, you know$ winters is-- you know, we're surrounded by walnut trees, so it made nse really to come here. you know, people really like walnuts. they know them very well. so we...we're in the perfect area to grow. and i mean, you know, it's california. it's nice weather. i think i choose a very nice place. before matthieu's invention, nut oils were strictly imports and thus lacked taste and affordability for most consumers. mattheiu says the keys to a superior nut oil are twofold. first, the method is crucial, which involves taking the walnuts from dan's farm and sun-drying them, shelling, grinding, and then roasting the nuts, all to enhance flavor. and the other secret to success? the walnuts, of course. >> well, it's simple. i mean, what we're doing is not only extracting the oil from the walnut, what we are trying to get is the flavor of the walnut in the oil, and that's really what makes th