Joybuy Insights

Buying a Santoku knife: what really matters about the blade, handle and care

A Santoku knife combines a broad blade with a relatively compact design. It’s suitable for slicing, dicing and chopping vegetables, fish and boneless meat. However, not every model is right for every kitchen. Some knives are marketed as having “Japanese design” but are made in Germany or elsewhere. Others have a coating or a granton edge, even though these features may not be relevant to the way you cut.

If you’re looking to buy a Santoku kitchen knife, don’t focus solely on the price or marketing claims. Look for verifiable details about blade length, material, handle, care and intended use.

Common Santoku knife buying and marketing pitfalls

1. Japanese style doesn’t automatically mean made in Japan

“Japanese Santoku knife” may describe the shape or design. The country of manufacture is a separate matter. For example, a knife may be made in Germany while still featuring a Santoku blade inspired by Japanese designs. If you’re specifically looking for a Santoku knife made in Germany or a Santoku knife made in Japan, check the country of origin in the product details.

2. Granton edges are often overrated

The indentations in the blade are known as a granton edge. They can reduce contact between food and the blade while you’re cutting. However, that doesn’t mean food will always stick less or every cutting task will become easier. For everyday use, blade shape, sharpness, balance and the right cutting technique are just as important.

3. “Dishwasher safe” doesn’t say much about long-term sharpness

A dishwasher-safe Santoku knife is convenient when you want to clean up quickly. However, hard objects, detergents and high temperatures in the dishwasher can put extra strain on the blade and handle. That’s why many manufacturers recommend hand washing, even for models that are dishwasher safe. This advice is particularly relevant if keeping the blade precise over time is a priority.

The key things to consider

Blade length: 12, 17 or 18 cm?

An 18 cm Santoku knife gives you plenty of blade for larger vegetables, fish fillets and boneless meat. It’s a versatile standard size for many households, but you’ll need enough space on your chopping board to use it comfortably.

Compact 12 cm models, such as the Tefal Fresh Kitchen K12201, are worth considering if you have smaller hands, limited worktop space or lighter prep tasks. A 17 to 18 cm blade offers greater reach and is better suited to regular, more extensive food preparation.

Blade material and edge geometry

A stainless steel Santoku knife is corrosion-resistant and relatively easy to care for in everyday use. Terms such as “rust-free”, “ice-hardened” or “FRIODUR” describe the material or manufacturing features of a particular model, but they don’t replace proper care.

Look for:

  • Blade length and thickness suited to the tasks you have in mind
  • Corrosion-resistant stainless steel or specially hardened blade steel
  • Clear information about the edge, such as a simple V-edge
  • A sturdy connection between the blade and handle
  • A weight you can handle safely and comfortably

A sharp kitchen knife shouldn’t need to be pushed through food with excessive force. Bones, frozen food, hard skins and glass, stone or ceramic surfaces can damage the edge.

Handle, balance and care

An ergonomic handle should feel secure in your hand when dry. Plastic, ABS and wood differ in both care requirements and feel. As a rule, wooden handles shouldn’t be soaked or washed in the dishwasher. Whatever the type of knife, store it in a knife block, on a magnetic strip, in a drawer insert or with a blade guard.

Ideal for: Budget-conscious beginners
Tefal Fresh Kitchen K12201 Santoku Knife, 12 cm, Anthracite/Orange

Tefal Fresh Kitchen K12201 Santoku Knife, 12 cm, Anthracite/Orange

Why this product suits this profile: The 12 cm blade is well suited to smaller kitchens and everyday cutting tasks. The soft-touch handle and blade guard help you handle it with control.

How this product avoids the pitfall

The blade length is clearly stated, helping you avoid buying a knife that’s too large for a small worktop or light food preparation.

Key benefits and strengths

12 cm coated stainless steel blade, ergonomic soft-touch handle and blade guard.

Ideal for: Buyers with high quality standards
ZWILLING Gourmet Santoku Knife - 18 cm - FRIODUR Ice-Hardened - Dishwasher Safe

ZWILLING Gourmet Santoku Knife, 18 cm

Why this product suits this profile: The 18 cm blade, made from FRIODUR ice-hardened special formula steel, is designed for households looking for a versatile size and clear information about the materials.

How this product avoids the pitfall

The product details state the country of origin, blade length, material and cleaning suitability. This makes it easier to check the facts before buying, rather than choosing on the basis of marketing claims alone.

Key benefits and strengths

18 cm blade, made in Germany, dishwasher safe according to the product details, with an ergonomic plastic handle.

Ideal for: Specific uses and frequent use
ZWILLING Twin Cuisine Santoku Knife, 18 cm, with granton edge

ZWILLING Twin Cuisine Santoku Knife, 18 cm, with granton edge

Why this product suits this profile: The granton edge may appeal if you often slice vegetables, fish and boneless meat and want to reduce contact with the blade.

How this product avoids the pitfall

The granton edge is listed as a specific blade feature, rather than the knife being marketed in general terms as having Japanese design. Hand washing is recommended to help protect the edge.

Key benefits and strengths

18 cm ice-hardened stainless steel blade, granton edge, full-tang construction and corrosion-resistant finish.

Ideal for: Versatile households that prep food regularly
Forged Stainless Steel Santoku Knife SP

Forged Stainless Steel Santoku Knife SP

Why this product suits this profile: The forged construction, full tang and ergonomic handle make this a good option if you regularly slice, dice and chop.

How this product avoids the pitfall

The product description gives specific details about the construction, handle and intended uses. This makes it easier to assess stability and handling than relying on the word “professional” alone.

Key benefits and strengths

Forged stainless steel, full-tang construction, ergonomic handle and suitable for vegetables, fish and boneless meat.

Looking for more options?

We’ve put together a complete, regularly updated list of products that meet these strict selection criteria and fully comply with the safety regulations in force in the EU.

Care tips to keep your blade in good condition

  • After use, wash the knife with mild washing-up liquid and dry it straight away.
  • Don’t leave acidic foods on the blade for long periods.
  • Don’t use abrasive sponges or harsh cleaning products.
  • Use wooden or plastic chopping boards.
  • Don’t store the blade loose in a drawer.
  • If the knife starts to lose its edge, use a suitable honing steel, sharpening stone or professional sharpening service.
  • Don’t cut bones, frozen food or hard objects.

Frequently asked questions about Santoku knives

Is a Santoku knife suitable for vegetables and fish?

Yes. The broad blade is generally suitable for cutting vegetables, fish and boneless meat. Santoku knives aren’t designed for bones, frozen food or very hard ingredients.

What blade length is best for a Santoku knife?

For many households, 17 to 18 cm is a versatile range. A 12 cm blade may be more comfortable if you have limited worktop space, smaller hands or lighter tasks. The right choice depends on the size of your chopping board, the ingredients you prepare and what feels comfortable to use.

Can you put a Santoku knife in the dishwasher?

It depends on the model. Some products are listed as dishwasher safe by the manufacturer, while others should only be hand washed. Even if a knife is labelled dishwasher safe, hand washing can help keep the blade and handle in good condition for longer.