These white noodles are sold dried, fresh or frozen. Dried udon noodles can vary in thickness and can be quite dense. While the shelf-stable dried noodles are a convenient option, fresh or frozen noodles have the best chewy texture and are quite thick, so don't miss an opportunity to pick some up when you see them.
Udon noodles have a mild flavor and are usually served in a light broth as a noodle soup, where they hold up quite well in the broth. They can also be made into a noodle stir-fry or served cold with a dipping sauce.