[Marttiini] Superior Birch Fillet Knife

The Superior Birch Fillet Knife by Marttiini is a Finnish-made fish-slayer that’s been carving up catches since the late ‘60s—no hype, just a blade that works. It’s 27cm overall, with a 6-inch (15cm) stainless chrome steel blade—flexible, razor-sharp, and polished to a gleam. That steel’s got 13% chromium, clocking in at 53-54 HRC—stays keen for ages, shrugs off rust, and bends just enough to glide through fillets like a hot knife through butter. Perfect for fish around 1kg, it’s nimble and precise, not some oversized cleaver.

The handle’s straight-grained birch—varnished smooth, durable as hell, with a warm, natural glow that feels right in your grip. No rubbery nonsense, just wood that’s been sanded and sealed to last, fitting your hand like an old friend. Full tang runs through it, capped with a nut at the pommel—solid, no wobble, built to take a beating. Weighs next to nothing, so your wrist won’t quit halfway through a haul.

Comes with a leather sheath—natural tan, hand-stitched, tough oxhide with a plastic liner to keep that blade from chewing through. Slings onto your belt with a loop, stays out of the way when you’re crouched over a gutting board. This isn’t a flashy gimmick—it’s a fisherman’s tool, born to slice clean and leave you with perfect fillets. Marttiini’s been at this forever, and the Superior Birch proves it: simple, sturdy, and damn good at what it does.