The "yuzu kosho" furikake flavor is appealing to youth for a few reasons. First, it offers a combination of contrasting flavors, with the citrusy tang of yuzu providing a refreshing and zesty taste, while the chili peppers add a spicy kick that many young people enjoy. This combination of flavors creates an exciting and memorable eating experience.

Additionally, the younger generation often seeks out bold and adventurous flavors, and "yuzu kosho" delivers just that. It's a departure from traditional furikake flavors, which may be more familiar to older generations, making it an intriguing option for those who want to try something new and exciting.

Lastly, the visual appeal of the vibrant green and orange colors in "yuzu kosho" furikake can also attract younger consumers, as they often associate bright colors with exciting and flavorful foods. Overall, the unique taste profile, boldness, and visual appeal make "yuzu kosho" a popular furikake flavor among the youth.