Cold champon noodles. ひやしチャンポン。
Champon noodles are a local dish from Nagasaki. They are usually served in a broth of pork and chicken on the bone, with finely chopped seafood (small prawns, oysters, white fish), kamaboko, and vegetables (onion, carrot, cabbage), but here they are served as a cold dish for summer.
[Hiyashi Champon. Photo Ad Blankestijn]
The broth is also cold and adds a nice touch, very different from cold udon or soba noodles.