Hiyashi chuka ramen is a cold ramen dish that is perfect for hot summer days. The noodles are served cold and topped with a variety of colorful vegetables, such as cucumber, tomato, and carrot. The toppings can also include sliced ham, egg, and nori seaweed. The dish is typically served with a tangy and sweet sauce made with soy sauce, vinegar, and sugar. Hiyashi chuka ramen is a refreshing and healthy dish that is perfect for cooling down on a hot day.