Chefs typically get upset if you use their knives in the dishwasher because dishwashers can be harsh on knife blades and handles, leading to several potential issues:
Damage to the blade: Dishwashers use high-pressure jets of water and harsh detergents, which can cause the knife blade to collide with other items in the dishwasher, leading to chipping or dulling of the edge.
Corrosion and rust: While stainless steel is resistant to corrosion, it is not entirely immune. Some dishwasher detergents contain chlorine or other chemicals that can cause stainless steel to discolor or even rust over time, especially if the knife has any small imperfections or micro-chips on the blade's surface.
Handle damage: The high temperatures in the dishwasher can damage wooden or composite knife handles, causing them to crack or warp. This not only affects the aesthetics but also compromises the knife's balance and overall performance.
Safety concerns: Placing knives in the dishwasher can be hazardous, especially if they are not secured properly. The sharp blades may pose a risk to the person unloading the dishwasher or cause damage to the dishwasher racks.
Hand washing knives is recommended for several reasons, even with high-quality stainless steel knives:
Preserve sharpness: Hand washing with a gentle detergent and soft sponge helps maintain the sharpness of the blade. It prevents unnecessary wear and tear, ensuring that the knife stays sharper for longer.
Protect the handle: Hand washing allows you to be more careful with the knife's handle, preventing unnecessary exposure to water and high temperatures that can cause damage.
Extend longevity: Properly cared for knives can last for many years, and hand washing is part of the proper care routine. Regular dishwasher use can shorten the lifespan of even the best-quality knives.
To hand wash knives effectively:
Clean promptly: Rinse the knife immediately after use to prevent food particles from drying and sticking to the blade.
Use mild detergent: Use a gentle dishwashing liquid and a soft sponge or cloth to clean the knife. Avoid abrasive pads or harsh chemicals.
Dry immediately: After washing, dry the knife thoroughly with a towel. Avoid air-drying, as moisture can still lead to corrosion.
Store properly: Store knives in a knife block, on a magnetic strip, or in a knife guard to protect the blade and prevent accidents.
By following these practices, you can ensure that your knives stay in excellent condition and serve you well for a long time.