As a recent take on this was a little more free. Regardless, said noodles along with various other toppings and a dipping sauce, along with a good sake. Nice combination!
There are any number of cold somen noodle recipes online — a fun I came across, which links to a recent LA Times story as well, is courtesy of the Food Librarian. Needless to say any library employee in the LA area who is a cooking fiend is all right by me, so I salute you!
Somen noodles are easily cooked, rinsed and chilled, and so long as you have the basic dipping sauce around — somen tsuyu is how it’s labeled if you go the storebought route — the sky’s the limit in terms of what you want to include or try.