The Hatsukokoro Blue #2 Rainbow Santoku 185mm is crafted in Seki, Japan and showcases a stunning near-mirror rainbow Damascus finish that looks even better in person. At its core is Blue #2 (Aogami #2) carbon steel, known for its excellent edge retention, easy sharpening, and crisp, responsive feel on the stones. The stainless cladding adds durability and helps reduce maintenance, while the solid ebony octagonal handle provides a comfortable, well-balanced grip for precise control in the kitchen.
Blue #2 carbon steel is a favorite among enthusiasts for its ability to take a very fine edge and hold it through extended use. As with all carbon steels, it will develop a patina over time and should be dried after use to prevent rust. With proper care, this steel delivers outstanding performance and long-term edge quality.
Care Instructions: Hand wash and dry immediately after use. Do not leave the knife wet or in a damp environment. Avoid cutting hard or frozen foods. Use a soft wood or rubber cutting board to protect the edge. Carbon steel will naturally develop a patina with use.
Maker: Hatsukokoro Location: Seki, Japan Construction: San Mai Edge Steel: Blue #2 Carbon Steel HRC: 62+- Cladding: Stainless Rainbow Damascus Edge Grind: Even 50/50 Handle: Ebony Octagonal Weight: 5.5 oz (156 g) Edge Length: 184 mm Total Length: 321 mm Spine Thickness at Base: 3 mm Blade Height: 48 mm
Blue #2 carbon steel is a favorite among enthusiasts for its ability to take a very fine edge and hold it through extended use. As with all carbon steels, it will develop a patina over time and should be dried after use to prevent rust. With proper care, this steel delivers outstanding performance and long-term edge quality.
Care Instructions: Hand wash and dry immediately after use. Do not leave the knife wet or in a damp environment. Avoid cutting hard or frozen foods. Use a soft wood or rubber cutting board to protect the edge. Carbon steel will naturally develop a patina with use.











