Never Put Your Knives Away Wet After handwashing your knives, be sure that they are completely dry before putting them away. Storing your knives wet will lead to rust over time, damaging your blades. This also creates an environment for mold and bacteria to grow (gross).
Leaving your knives soaking in water is never a good idea. Not only is it dangerous to leave a knife in a sink, but the water also has the potential to damage the blade. Not only is there an increased possibility of the blade rusting, but it will almost always cause the handle to degrade.
But a sharp knife should not be left to soak in water. Wet knives and over exposure to water will result in much quicker corrosion not to mention damage to the handle if it is made from wood or metal. You should also consider how dangerous leaving knives in the sink is for fingers.
Laying knives in a wet sink throws caution to the wind on many levels. First of all, allowing a knife to sit in water can cause corrosion, spotting, and rusting of the blade. This rule applies to sinks with or without standing water in it. Even an empty sink that is just wet is off limits for a knife.
Pro tip. Dry your knife as soon as you wash it then put it away. Letting it air dry causes oxidation which pits the blade.
Here's why it's also bad for your knives: Leaving your knife dirty, means that a part of the beautiful meal you just finished prepping is still sitting on that blade. Anything acidic or salty or moist is actively trying to eat away at your blade steel and handle.
"Dry your knife right away after washing. Don't let it sit,” says Chaya Rappoport, Culinary Manager at Jewish Food Society. Leaving your knife to air dry can dull the blade more quickly or even cause rust. Of course, this also means don't leave your knives soaking in the sink overnight either.
Rule #1: It is important to use a knife adapted to what you want to do / food you want to prepare. For example, you shouldn't use a bread knife to slice a roast or use the blade of a paring knife and use it as a screwdriver (don't laugh, we've all done it!) Rule #2: Don't drop your knife on the floor.
Clean Promptly—and Don't Soak
"It's best to wash, or at least rinse, right after use to avoid having to scrape food off later," she says. But forego soaking. "Knives should never be left soaking in water, as it would lead to rust of the blade and handle," Wüsthof explains. "Not to mention it can lead to injury."
After each use, make sure to wash your knife with warm soapy water and immediately dry it thoroughly. Don't let it air dry—grab a towel and get that blade bone dry to avoid rusting. Avoid the Dishwasher: Dishwashers and carbon steel don't get along.
Do not leave the knife near the edge of counters or tables or in a sink full of soapy water. Use knives only for cutting food. Carry knives with the blade pointed downward. Keep knives sharp.
Rust forms on knives when iron and oxygen react in the presence of water or moisture. This reaction creates a chemical compound known as iron oxide, which we commonly refer to as “rust”.
Never leave knives soaked in a sink full of soapy water. You may injure yourself by putting in your hand to take them out. Soaking knives also increases the risk of corrosion. Remember, corrosion resistant doesn't mean that the knife will never rust regardless of how it is used.
Moisture Is Your Knife's Natural Enemy
Setting physical damage and contamination aside, leaving your knives in the sink exposes them to a hidden enemy: moisture. Even if your knives are crafted from stainless steel, prolonged submersion in water can lead to discoloration.
One of the most common ways kitchen knives get dull is through friction while cutting. Any time you slice, chop, or crush food with your knife's edge, some microscopic bits of metal get rubbed off the blade. This abrasion gradually rounds off the sharp cutting edge through repeated use.
Consider cleanliness. Wooden knife blocks (just like wooden cutting boards) can become breeding grounds for yeast and mold if you don't dry or clean your knives properly. The cleanest way to store your knives is in a drawer block or a magnetic strip.
Knives should be kept dry. This prevents rust and bacteria growth. A wet sheath is a good example of a less than ideal spot to store a knife (sometimes unavoidable, but dry it out the first chance you get).
Kitchen Knives
A rule of thumb in safe food preparation is to be sure you don't cut raw meat, poultry or fish on the same surface without thoroughly cleaning it between uses. The same is true for your knife. Wash your knife with dish soap and hot water after each use.
There are three primary knives that every home cook should have in their kitchen: a chef's knife, a serrated knife (also called a bread knife), and a paring knife.
Since the 1980s, the 21-foot rule has dominated law enforcement training. This rule was originally developed by John Tueller who was a training Lieutenant in the Salt Lake City Police department. He observed that it took trainees about 1.5 seconds to draw and fire a holstered weapon.
Rule #9: Never go anywhere without a knife.
Soak in the Sink
Soaking a knife in the sink can cause all sorts of damage. It can cause high-carbon steels to rust. Wooden handles can swell and crack. If the knife is in the sink with other utensils, they can blunt or chip the edge.
Over-sharpening a knife can actually damage the edge and make it duller. It's important to sharpen a knife only when it needs it, and to sharpen it to the correct angle.
After washing your knives, dry them immediately with a clean towel, as letting them air dry will make them more likely to rust. Tip: You should not be washing your kitchen knife in the dishwasher, especially if the handle is made from wood or resin.