Red pepper and habanero powder are added to the miso-flavored soup to create an exciting super-spicy miso soup. The supple and chewy texture of the medium-thick small noodles is often entwined with the spicy soup, which enhances the taste of the soup behind the spiciness. Kayaku is a combination of ingredients such as chicken soboro, eggs, and bok choy that look good in the color of the bright red soup.
The product name "Scoville" is named after the unit "Scoville value" that expresses the spiciness of chili peppers, which was devised by Dr. Wilbur Scoville of the United States. The Scoville value "1,400 Scoville" calculated from the amount of capsaicin contained in this product is displayed on the package.