Gyuto 235mm GoMai Apex Ultra Integral Stabalized Bog Oak

This 235 mm Gyuto by Jeroen Knippenberg is a refined handmade kitchen knife that balances technical performance with strong material presence. Forged in a 5-layer Go Mai construction with an Apex Ultra core, it is designed for serious cutting work while maintaining the visual and tactile qualities that define Jeroen’s integral pieces. The longer profile and generous blade height give the knife a composed, authoritative feel on the board, making it particularly well suited to larger ingredients, high-volume prep, and users who appreciate a Gyuto with a little more reach and substance.

At the heart of the blade is Apex Ultra, a high-performance carbon steel known for its extremely fine grain, excellent edge stability, and outstanding sharpness potential. Hardened to 66 HRC, it offers exceptional cutting performance and strong edge retention for those willing to care for a non-stainless knife properly. The acid-etched forced patina gives the blade a darker, more subdued finish while also highlighting the character of the layered construction. Over time, the blade will continue to develop its own surface character through use, reinforcing the individuality of the piece.

The geometry has been developed to support both power and control. With a spine measuring 4.67 mm at the heel, 3.15 mm at mid-blade, and 1 mm near the tip, the knife carries reassuring strength through the rear of the blade while still tapering enough to support precise, controlled tip work. The convex grind helps reduce cutting resistance and encourages improved food release, while the 56 mm blade height provides excellent knuckle clearance and a confident working platform. At 312.6 g, the knife has a notably solid feel in hand, lending stability and momentum through more demanding prep without compromising overall control.

The handle is finished in stabilized bog oak with G10 accents, bringing together durability, texture, and a restrained visual contrast that complements the darker blade finish well. The result is a knife that feels cohesive and deliberate in every detail—well suited to cooks and collectors seeking a larger-format Gyuto with elevated cutting performance, distinctive materials, and the unmistakable character of a handmade integral by Jeroen Knippenberg.