Hiyashi chūka
Hiyashi chūka is a Chinese-style Japanese dish consisting of chilled Chinese noodles with various toppings served in the summer. It is also called reimen in Kansai region and hiyashi rāmen in Hokkaido. Toppings are usually colorful cold ingredients and a tare sauce.
The dish was invented in 1937 by the Chinese restaurant Ryutei in Sendai as an adaptation of the Shanghainese dish liangbanmian. The dish was originally sold in Japan under the borrowed Chinese name ryanbanmyen. The name "hiyashi chuka" was established in the late 1950s.
Popular toppings are meat, strips of tamagoyaki, summer vegetables like cucumber and tomatoes, menma, and beni shōga as a condiment. Toppings are cut thin, to mix well with the noodles and the sauce. The tare sauce is usually made with a base of either soy sauce and rice vinegar, or sesame seeds and mayonnaise.