Good kitchen knife care keeps blades cleaner, safer to handle, and more effective at cutting. A few habits—washing by hand, drying promptly, storing blades so they cannot knock against other tools, and sharpening when needed—help protect both the edge and the handle.
Before you begin, check the care instructions that came with a knife, especially if it has a special coating, unusual handle material, or a manufacturer-specific sharpening recommendation. For everyday care, you will need mild dish soap, a soft sponge or cloth, a clean towel, and a suitable storage place. A honing rod or sharpening tool is optional; honing and sharpening are different tasks, so use each for its intended purpose.
What You’ll Need
- Mild dish soap and a soft sponge or dishcloth
- A clean, dry towel
- A knife block, blade guard, magnetic strip, or drawer insert that keeps blades separated
- Optional: a honing rod or sharpening stone, used according to its instructions
- Optional: food-safe mineral oil for a carbon-steel blade, if its care instructions recommend it
Step-by-Step
- Choose an appropriate cutting surface. Use a stable cutting board made from wood or plastic, and place a damp cloth underneath if the board slides. Avoid cutting directly on glass, stone, ceramic, or metal. These hard surfaces can wear or damage an edge quickly. Do not use the knife to pry, twist, scrape, or open packaging; choose a tool designed for that job.
- Use a controlled grip and cutting motion. Hold the handle securely, keep fingertips curled on the hand holding the food, and guide the blade with deliberate strokes. A sharp, well-maintained knife is generally easier to control than a dull one, but it still needs careful handling. Keep the blade pointed away from your body, and do not try to catch a falling knife.
- Wash the knife soon after use. Rinse off food residue and wash the blade by hand with warm water, mild dish soap, and a soft sponge or cloth. Wipe from the spine toward the edge rather than dragging fingers along the cutting edge. Keep the sharp edge directed away from your hand, and clean both sides. If food is stuck, let water loosen it instead of scraping the blade against a hard object.
- Keep the blade out of the sink. Do not leave a knife submerged in dishwater. It may be hard to see, and reaching into soapy water can result in a cut. Wash it separately, keep it in view, and set it in a safe place while cleaning other dishes. Avoid passing a knife blade-first to someone; place it on a work surface and let the other person pick it up by the handle.
- Dry it completely at once. Use a clean towel to dry the blade and handle, paying attention to the area where the blade meets the handle. Do not leave the knife to air-dry in a rack or on the counter. Water left on a blade can cause corrosion or spots, especially on carbon steel, and moisture can also affect some handles over time.
- Store the knife so its edge is protected. Put it in a knife block, a drawer insert with separate slots, or a blade guard. A securely installed magnetic strip can also work if the knife can be placed on and removed from it without striking other blades. Keep knives away from loose cutlery in a drawer, where blades can collide and hands can meet an exposed edge. Store them dry and out of reach of children.
- Inspect the blade and handle regularly. Look for rust, chips, a bent tip, a loose handle, or a blade that moves at the handle. Stop using a knife that is damaged or unstable. Small surface discoloration on some steels may be removable, but deep corrosion, a crack, or a loose handle needs attention from a qualified knife repair professional. Do not attempt to bend or force a damaged blade back into shape.
- Use honing to realign an edge when appropriate. Honing does not remove much metal or restore a badly worn edge; it can help realign an edge that has shifted through ordinary use. If using a honing rod, follow its instructions, work on a stable surface, and keep the blade path controlled and away from your body and hands. Not every knife is suited to every rod, so check the knife’s care guidance. If honing does not improve the cut, the knife may need sharpening.
- Sharpen when the knife no longer cuts cleanly. Sharpening removes a small amount of metal to create a new edge. Use a method appropriate for the knife and follow the tool’s instructions, including any guidance about angle and technique. A whetstone requires controlled practice; a pull-through sharpener is not suitable for every blade. If you are uncertain, or the blade is chipped, unusually thin, serrated, or expensive to replace, seek a professional sharpening service.
- Give carbon steel the care its material needs. Carbon-steel blades can develop rust if left damp, so clean and dry them promptly and do not leave acidic or salty food on them. Some develop a darkened surface patina through use; that is different from active rust, though appearance alone is not a reliable diagnosis. If the care instructions call for it, apply a very thin film of food-safe mineral oil to a clean, dry blade before longer storage. Do not oil a blade immediately before food preparation without cleaning it first.
Common Mistakes
Putting knives in the dishwasher: Dishwasher detergent, heat, water exposure, and contact with other items can harm an edge or handle. Unless the maker explicitly gives different instructions, hand-washing and prompt drying are the safer routine.
Leaving a knife loose in a drawer: The edge can strike other utensils, and someone reaching into the drawer may be cut. Use a guard or a storage system that separates each blade.
Using the cutting edge to scrape food: Dragging the sharp edge sideways across a board can damage it. Turn the knife over and use the spine, or use a bench scraper.
Confusing honing with sharpening: Repeated honing will not fix a blunt or damaged edge. Conversely, sharpening too often removes metal unnecessarily. Assess how the knife cuts and use the appropriate maintenance method.
Using a knife on the wrong material: Hard boards and improvised tasks such as prying can chip or dull an edge. Choose a forgiving cutting board and the right tool for the job.
Assuming stainless steel cannot rust: Stainless steel resists corrosion; it is not immune to it. Salt, acids, moisture, and neglect can still leave marks or corrosion. Clean and dry the blade after use.
Tips
- Keep a clean towel and a clear place to set a knife before you start cooking. This makes prompt washing and drying easier.
- Use a separate board for especially strong-smelling foods when practical, and clean the knife between ingredients to avoid transferring flavors or residue.
- When carrying a knife, hold it by the handle with the point down and the edge turned away from your body. Walk carefully and do not carry it hidden under a towel or among dishes.
- When handing a knife to another person, set it down on a stable surface with the handle accessible instead of passing it through the air.
- For a magnetic strip, attach the knife gently with the spine or flat side approaching first; remove it by controlling the handle and lifting the blade away rather than scraping the edge along the magnet.
- Keep sharpening tools clean and store them safely. A dirty or damaged sharpening surface can make maintenance less predictable.
- If you share a kitchen, agree on where knives belong and tell others when a blade is newly sharpened or has a damaged handle.
Troubleshooting
The knife has spots after washing: Wash and dry it thoroughly, then identify whether the marks are residue, staining, or corrosion. For a suitable blade, a non-abrasive cleaning method recommended by its maker may remove surface marks. Do not use harsh abrasives or chemicals without checking the care instructions. If the surface is pitted or the rust returns, consult a knife professional.
The knife feels dull after honing: Honing may not be enough if the edge is worn, rolled substantially, or damaged. Stop repeating the same action and use a compatible sharpening method or arrange professional sharpening. A chipped edge may need more involved repair.
The blade slips on food: First make sure the board is stable and the knife is clean. A dull edge can skid rather than bite into a smooth surface, so have the knife assessed for sharpening. Do not compensate by pressing harder; that reduces control.
The handle feels loose or cracked: Stop using the knife. A loose handle can make the blade unpredictable. Do not rely on tape, glue, or a temporary fix during food preparation; ask a qualified repair professional whether it can be repaired safely.
A knife was left wet or in the sink: Remove it carefully by the handle if it is visible and safe to reach; never reach blindly into dishwater. Wash and dry it, then inspect for damage or corrosion. If rust is deep or the blade has been damaged, get professional advice before using it again.
You are unsure which sharpener to use: Check the knife’s instructions or ask a professional sharpener. Blade geometry, serrations, coatings, and steel can affect the suitable method. Guessing with an incompatible tool may remove too much material or damage the edge.
Frequently Asked Questions
Can kitchen knives go in the dishwasher?
Hand-washing is the prudent choice for most kitchen knives because the environment can damage edges and handles. Follow the knife maker’s instructions if they specifically state otherwise.
How often should I sharpen a kitchen knife?
There is no single schedule that suits every knife or household. It depends on how often the knife is used, what it cuts, the board, and the blade material. Sharpen when it no longer cuts cleanly after ordinary honing, or ask a professional to assess it.
Is honing the same as sharpening?
No. Honing can realign an edge that has shifted during use, while sharpening removes metal to form a new edge. A dull, chipped, or worn knife usually needs sharpening rather than more honing.
Are wooden or plastic cutting boards better for knives?
Both are commonly used and are generally more forgiving to an edge than very hard surfaces such as glass or stone. Whichever you choose, keep it stable, clean it appropriately, and replace it if it becomes difficult to keep sanitary.
Can I store a knife in a kitchen drawer?
Yes, if a fitted insert keeps blades separated or each knife has a secure blade guard. Do not leave exposed knives loose among other utensils.
What is the dark coating on a carbon-steel knife?
A darkened surface can be a patina that develops with use, while rust is active corrosion. The two can look different, but appearance may not settle the question in every case. Keep the blade clean and dry, and consult its care instructions if you see orange-brown corrosion, pitting, or recurring marks.