For the 2025 Japan Brewers Cup, Yasuo shaped his brewing routine around three critical elements: intensity, quality, and complexity. These were integral to creating a cup of unparalleled clarity and flavor. Through a precise grind and an ultra-short extraction, he achieved a floral fruitiness and a rich, full-bodied sweetness.
To achieve ultra-fast and precise brewing, Yasuo collaborated with Acaia to innovate. He proposed a pour-over stand with both adjustable height and a Drip Lock mechanism for precise control over the final extraction.
These ideas became a reality through the Acaia Keystone Stand. Designed to pair with a customized Pearl S, the Lunar, and the Pyxis Black, the Keystone Stand has become an essential tool in this precision routine.
Who is YASUO ISHII
A representative of Leaves Coffee Roasters, Yasuo is both a self-taught roaster and barista. Born in Fukagawa, Tokyo, his unshakable dedication stems from his time as a professional boxer and 20 years in the restaurant business. In 2010, a gift of coffee from an acquaintance opened the door to a new world. He established Leaves Coffee Apartment in 2016. Yasuo believes that coffee can inspire, connect, and change one’s life.