Knife Maintenance & Care Hub
Master the art of caring for your Japanese knives. This hub gathers Hasu-Seizo’s expert guides on sharpening, cleaning, oiling, and proper storage — ensuring each blade performs beautifully for years to come.
The Complete Guide to Sharpening Japanese Knives: Stones, Techniques, and Angles
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Whetstone Grit Explained: Choosing the Right Grit for Japanese Knives
Confused by whetstone grit numbers? This in-depth whetstone grit guide explains exactly which gri...
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Common Knife Sharpening Mistakes (And How to Fix Them)
Sharpening a knife shouldn’t feel mysterious—but small mistakes can quietly ruin your edge. Learn...
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How to Flatten a Whetstone (And Why It Matters for Sharpness)
A flat whetstone is the foundation of a sharp knife. Learn how to flatten a whetstone properly, h...
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How Often Should You Sharpen Japanese Knives? A Practical Guide
How often should you sharpen Japanese knives? The answer depends on steel type, cutting habits, a...
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The Complete Guide to Sharpening Japanese Knives: Stones, Techniques, and Angles
Sharpening Japanese knives isn’t just maintenance—it’s part of the craft. This complete guide wal...
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What Angle To Sharpen Japanese Knives For Best Results
When it comes to sharpening Japanese knives, many chefs and home cooks ask: what angle to sharpen...
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Hasu-Seizo is a family-owned and operated business proudly offering handcrafted Japanese knives to chefs of all levels in the U.S. and beyond. Originally from Osaka, we are the makers of the renowned Sakai Takayuki brand, carrying forward the rich traditions of Japanese knife-making. Rooted in generations of craftsmanship and dedication, we honor this legacy with every blade we create.