A well-made knife is a precision tool, and the way you clean it decides how long it stays that way. Learning how to clean knives properly protects the three things that make a quality blade worth owning: the edge, the steel, and the handle. The routine takes less than a minute after each use, and it works for every knife in your knife set, from the chef's knife you reach for daily to the paring knife you use once a week.
Why You Should Always Hand Wash Your Knives
One of the most common questions we hear is whether knives can go in the dishwasher. For quality cutlery, the answer is no. A dishwasher combines high heat, harsh detergent, and strong water jets, and all three work against a fine edge. Heat and detergent speed up corrosion, and the constant movement inside the machine knocks blades against other metal, leaving tiny chips along the edge and scratches across the finish.
Hand washing puts you in control. You decide what touches the blade, how long it stays wet, and how it gets dried. That small bit of attention is what keeps a knife feeling the way it did on the first day.
Hand Washing vs. the Dishwasher
| What It Affects | Hand Washing | Dishwasher |
|---|---|---|
| Edge sharpness | Keeps the edge intact | Chips and dulls the edge over time |
| Handle | Protects wood and composite materials | Heat can warp, crack, or loosen handles |
| Blade finish | Prevents scratches and pitting | Harsh detergents can cause spotting and corrosion |
| Safety | Slow, controlled cleaning | Loose blades knock into other items |
Hand washing a knife takes less than a minute, and it protects the edge, the finish, and the handle every single time.
How to Wash Knives by Hand, Step by Step
Follow this routine after every use. It is simple, safe, and it keeps your blades in top condition for years.
Use warm water and mild dish soap.
Add a small amount of gentle dish soap to a soft sponge or dishcloth. Skip steel wool, abrasive scrub pads, and strong chemical cleaners, since they scratch the finish and can wear down the steel.Wash one knife at a time.
Never leave knives soaking in a sink of soapy water. You can't see the blade under the suds, which makes it easy to get cut, and long exposure to water invites rust along the edge and near the bolster.Wipe along the spine, away from the edge.
Hold the knife by the handle with the edge facing away from you. Wipe the flat of the blade from the heel toward the tip, and never run the sponge directly across the cutting edge.Rinse thoroughly.
Rinse under warm running water until every trace of soap is gone. Leftover detergent can leave spots on the blade over time.Dry right away.
Use a clean, dry towel to wipe the blade from spine to edge, then dry the bolster and handle completely before putting the knife away.
How to Clean Knife Handles and Bolsters
Every part of a knife is built with a purpose, and a few areas need a little extra attention during cleanup.
Wooden Handles
Wood is porous and doesn't handle moisture well. A handle that stays damp can swell, crack, or loosen over time. Dry wooden handles as soon as you finish washing, and every few months rub in a small amount of food-safe mineral oil to keep the wood from drying out and to maintain its natural luster.
The Bolster
The bolster is the thicker section where the blade meets the handle, and it is one of the easiest places for food and moisture to collect. Use the corner of a soft cloth or a small brush to clean the seam where the steel and handle come together. Buildup left in this area can lead to spot corrosion and may affect how the knife feels in your hand.
How to Dry and Store Knives to Prevent Rust
Washing is only part of the routine. How you dry and store your knives has just as much to do with how long they last.
Don't Let Knives Air Dry
Letting a knife air dry in a dish rack leaves water sitting on the steel, and that is where most rust spots begin. Towel drying takes about ten seconds and is one of the most effective habits you can build for long-lasting blades.
Store Knives Properly
Once a knife is dry, give it a dedicated home. A knife block, an in-drawer organizer, or a blade guard all protect the edge. Avoid tossing knives loose in a drawer, where contact with other utensils dulls the edge quickly and puts the tip at risk. For honing rods, blade guards, and other essentials, browse our Knife Care and Maintenance collection.
How to Remove Rust Spots and Stains from Knives
Even with good habits, water spots, mineral deposits, or light discoloration can appear over time, especially in homes with hard water. The key is to take care of them early, before they have a chance to set in.
For light rust or staining, mix a little baking soda with a few drops of water to make a paste. Apply it to the spot with a soft cloth and rub gently in the direction of the blade's grain. Rinse, then dry the knife completely. For minor pitting, a non-abrasive polish made for stainless steel can help restore the finish. The best fix is still prevention, and keeping your blade dry stops most of these problems before they start.
Knife Cleaning FAQs
Can you put Cangshan knives in the dishwasher?
We recommend hand washing all Cangshan knives. The heat, detergent, and movement inside a dishwasher can dull the edge, affect the finish, and wear down handle materials over time.
Is rubbing alcohol good for cleaning knives?
Rubbing alcohol is effective for sanitizing a blade, but it can strip natural oils from wooden handles and dry out some finishes. If you use it, apply it only to the metal, wipe it off quickly with a clean cloth, and keep it away from the handle.
Does hydrogen peroxide clean knives?
Yes. Hydrogen peroxide is a gentler disinfectant than bleach because it breaks down into water and oxygen without leaving a harsh residue. Rinse the blade with clean water afterward and dry it right away, since any liquid left on the steel can contribute to corrosion.
Does vinegar clean knives?
Diluted white vinegar can remove mineral deposits and light discoloration, which makes it useful for an occasional deep clean. Limit contact to a few minutes, then rinse and dry thoroughly. Don't let a blade soak in vinegar, and don't use it as part of your everyday routine, since the acid can affect the edge over time.
How often should I oil a wooden knife handle?
Every few months is enough for most home kitchens. If the wood starts to look pale or feel dry to the touch, it's time for a light coat of food-safe mineral oil.
