How to Clean Kitchen Knives Properly

Why Proper Knife Cleaning Matters

Kitchen knives are precision tools that require proper care to maintain their edge, prevent rust, and ensure food safety. Improper cleaning — especially putting knives in the dishwasher — is the fastest way to ruin a good knife. Here's how to clean kitchen knives correctly every time.

What You'll Need

• Non-scratch scrub sponge or soft cloth
• Microfiber cloth for drying
• Mild dish soap
• Warm water
• Food-safe mineral oil (for wooden handles)

The Golden Rule: Hand Wash Only

Never put kitchen knives in the dishwasher. The reasons are multiple and serious:

• Dishwasher detergent is highly alkaline and corrodes the blade edge
• High heat warps handles and loosens rivets
• Knives knock against other items, chipping the edge
• Wooden handles crack and split from repeated heat and moisture cycles

Even knives labeled "dishwasher safe" last significantly longer with hand washing.

Step-by-Step: How to Clean a Kitchen Knife

1. Wash immediately after use — don't let food residue dry on the blade
2. Hold the knife by the spine (the dull back edge), never by the blade
3. Wipe the blade with a soapy cloth or non-scratch sponge, wiping away from the edge
4. Clean both sides of the blade and the handle
5. Rinse under warm running water
6. Dry immediately and completely with a microfiber cloth — never air dry
7. Store properly (see below)

Cleaning the Handle

Different handle materials need slightly different care:

• Wood handles: Wipe clean, dry immediately, oil occasionally with mineral oil to prevent cracking
• Plastic or composite handles: Wash normally with soapy water
• Stainless steel handles: Wash normally, dry to prevent water spots

Proper Knife Storage After Cleaning

• Use a magnetic knife strip for easy access and blade protection
• Use knife edge guards if storing in a drawer
• Never store loose in a drawer — blades dull from contact with other utensils

Final Thoughts

Cleaning kitchen knives properly takes less than a minute per knife. Hand wash, wipe away from the edge, dry immediately, and store safely. These simple habits protect your investment and keep your knives sharp, rust-free, and food-safe for years.