ふかぐら亭(Fukagura-tei): Eat and/or make delicious handmade soba noodles with locally sourced ingredients!
They offer a soba making class for only 1500 yen. A truly unique (and tasty) experience.
When going for lunch, the “half set” is a good way to try the different noodles. The special thick noodles are a bit harder to eat but they are definitely worth it. We were 2 adults and 2 kids. It cost us less than 4000 yen for lunch and we were very full. We even took some leftovers home. The noodles were still very good the next day. Fukagura-tei is about 35 minutes by car from the Kashiwazaki station and is highly recommended!
https://goo.gl/maps/2EZGy3L39svwNYSV7