{"product_id":"mutsumi-honoura-blue-super-kurouchi-suminagashi-petty-knife-150mm","title":"Mutsumi Honoura Blue Super Kurouchi Suminagashi Petty Knife 150mm","description":"\u003ch2\u003eMutsumi Hinoura Blue Super Kurouchi Suminagashi Petty Knife 150mm\u003c\/h2\u003e\n\u003cp\u003eA compact hand-forged petty knife from Mutsumi Hinoura, made with a Blue Super carbon steel core, iron cladding, and a dark kurouchi finish over suminagashi layering.\u003c\/p\u003e\n\u003cp\u003eAt 150mm, this is a very useful small knife for everyday prep: trimming vegetables, preparing fruit, slicing garlic and shallots, and portioning small ingredients. The blade has a more substantial feel than many lighter petty knives, with a thicker spine and a reassuring weight in hand.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy We Like It\u003c\/h2\u003e\n\u003cp\u003eWe like this petty for the contrast between its rustic kurouchi upper blade and the suminagashi patterning below.\u003c\/p\u003e\n\u003cp\u003eCompared with many lighter petty knives, this one has a bit more presence in the hand. The thicker spine gives it a sturdy, confidence-inspiring feel, while the compact 135mm blade keeps it nimble for smaller prep jobs.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePetty – Compact Precision\u003c\/h2\u003e\n\u003cp\u003eThe petty is the small utility knife in a Japanese line-up. It is ideal for jobs where a gyuto or santoku feels too large, such as trimming vegetables, preparing fruit, slicing garlic and shallots, portioning small ingredients, and general off-board prep.\u003c\/p\u003e\n\u003cp\u003eAt 135mm, this petty sits in a very practical middle ground: compact enough for controlled hand work, but long enough to use comfortably on a chopping board.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBlue Super \/ Aogami Super – High-Carbon Edge Steel\u003c\/h2\u003e\n\u003cp\u003eBlue Super, also known as Aogami Super, is a high-carbon Japanese steel known for excellent sharpness and edge retention. Compared with simpler carbon steels, it contains additional alloying elements that help it hold an edge for longer, making it well suited to users who want strong cutting performance and are happy to give the knife the care carbon steel requires.\u003c\/p\u003e\n\u003cp\u003eIt is not stainless. The blade will develop a patina with use and can rust if left wet, so it should be wiped during prep and dried thoroughly after washing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKurouchi – Rustic Blacksmith’s Finish\u003c\/h2\u003e\n\u003cp\u003eKurouchi is the dark, rustic finish left from the forging process. It gives the blade a traditional appearance and helps protect the upper section of the knife, while still allowing the cutting edge and lower blade face to be ground and finished for performance.\u003c\/p\u003e\n\u003cp\u003eAs with all hand-forged finishes, there will be natural variation from knife to knife. This is part of the character of the blade rather than a flaw.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSuminagashi \/ Damascus – Layered Steel Finish\u003c\/h2\u003e\n\u003cp\u003eSuminagashi means “floating ink” and refers to the flowing pattern created by layers of steel in the cladding. Often described as a type of Damascus finish, it gives the blade movement and depth, with each knife showing slight variation in the pattern.\u003c\/p\u003e\n\u003cp\u003eOn this knife, the suminagashi sits beneath the darker kurouchi finish, giving a strong contrast between the rustic upper blade and the layered steel below.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eMutsumi Hinoura – Sanjo Blacksmithing Heritage\u003c\/h2\u003e\n\u003cp\u003eMutsumi Hinoura is a fourth-generation blacksmith from Sanjo, Niigata, and the son of master blacksmith Tsukasa Hinoura. He trained under and worked alongside his father before continuing the family’s long forging tradition in his own workshop.\u003c\/p\u003e\n\u003cp\u003eWe were lucky enough to visit Hinoura-san’s new workshop during our trip to Japan in 2026. Seeing the forge first-hand gave us a deeper appreciation for Mutsumi-san’s exceptional work.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCare\u003c\/h2\u003e\n\u003cp\u003eThis is an iron-clad carbon steel knife and should not be put in the dishwasher.\u003c\/p\u003e\n\u003cp\u003eThe Blue Super core steel and iron cladding are both reactive. The blade will develop a natural patina with use, especially when cutting acidic ingredients such as onions, citrus, and tomatoes. This is normal, but the knife can rust if left wet.\u003c\/p\u003e\n\u003cp\u003eWash by hand only, wipe during prep when working with acidic foods, and dry thoroughly after washing. Avoid leaving the blade sitting on a damp board or in the sink.\u003c\/p\u003e\n\u003cp\u003eUse on wooden or soft plastic chopping boards only. Avoid bones, frozen food, hard squash, and anything that may twist or chip the edge.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBlade Shape:\u003c\/strong\u003e Petty\u003cbr\u003e\u003cstrong\u003eBlade Length:\u003c\/strong\u003e 135mm\u003cbr\u003e\u003cstrong\u003eBlade Height:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eSteel:\u003c\/strong\u003e Blue Super \/ Aogami Super\u003cbr\u003e\u003cstrong\u003eConstruction:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eCladding:\u003c\/strong\u003e Iron \/ Suminagashi\u003cbr\u003e\u003cstrong\u003eFinish:\u003c\/strong\u003e Kurouchi Suminagashi\u003cbr\u003e\u003cstrong\u003eHandle:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eHandle Type:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eHRC:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eBevel:\u003c\/strong\u003e Double bevel\u003cbr\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eOverall Length:\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eAge Verification\u003c\/h2\u003e\n\u003cp\u003eYou must be over 18 to purchase this knife. Age is verified at checkout and again by the courier upon delivery. The parcel must be received by someone over the age of 18.\u003c\/p\u003e","brand":"Community Cutlery","offers":[{"title":"Default Title","offer_id":55789810680193,"sku":null,"price":258.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0565\/4970\/3819\/files\/82DA31C2-7CC1-4261-91A8-1E9A5094D2D5.jpg?v=1781113967","url":"https:\/\/www.communitycutlery.co.uk\/products\/mutsumi-honoura-blue-super-kurouchi-suminagashi-petty-knife-150mm","provider":"Community Cutlery","version":"1.0","type":"link"}