Chashu enhances the flavor of ramen by adding a layer of umami, sweetness, and saltiness to the dish. Umami is the fifth taste that is described as savory, delicious, or satisfying, and is found in foods that contain glutamate, such as meat, soy sauce, and cheese. Chashu is rich in glutamate, and also contains other flavor compounds that enhance the umami sensation, such as inosinate and guanylate. Chashu also adds sweetness and saltiness to the ramen, which balance the other tastes and create a harmonious flavor profile.