Permanently Closed

Hai Si is a Japanese izakaya concept by Yoshi Okai opened in 2025 in Aspen, Colorado.

"Step into a world where tradition meets innovation, led by renowned Chef Yoshi Okai. This underground izakaya invites you on a gastronomic adventure in an intimate, high-energy atmosphere. The carefully crafted menu features a tantalizing array of Japanese dishes with Spanish influence, showcasing Chef Okai's culinary expertise. The multi-course omakase experience blends bold flavors of traditional Japanese cuisine, and innovative interpretations into a unique tasting menu based on ingredient availability and seasonality that will delight your tastebuds. Our extensive wine, sake, and cocktail list perfectly complements your meal.

Hai Sí is more than a restaurant; it's an experience. The thoughtfully designed space includes four distinct areas, offering intimacy and exclusivity. Whether you seek a lively bar atmosphere, a refined dining experience, or a private celebration, Hai Sí caters to your every desire."