Udon is a simple filling meal that is soup based. In the picture it has thick buckwheat noodles, thinly sliced green onions, kamaboko (fish cake), and seaweed in a mildly flavored broth. There are other versions of udon, but this one came with the set. Before going to Japan I did not know that udon can be served cold. The first time I had cold udon was at a food court in a shopping center and I was curious on the difference between the two temperatures. I feel like you get more of the flavor with the cold udon rather than the warm. I like adding a poached egg to my soup for extra taste. I recommend trying cold udon if you have never had it before.