Hand wash your mandoline immediately after use with hot water and mild soap.
- Dry every part completely before storing to prevent rust and bacterial growth.
- Never use abrasive scrubbers or the dishwasher unless the manufacturer says it's safe.
- Apply food-safe mineral oil occasionally to protect the blade.
- Replace the slicer if the blade is damaged or rusted beyond cleaning.
Why Does a Mandoline Slicer Get Dirty and Dull?
Food residue and juices cling to the blade and crevices after slicing. Starches and acids from vegetables can corrode the metal over time. If left uncleaned, residue hardens and becomes difficult to remove. Dull blades result from improper cleaning, like using abrasive pads or dishwasher cycles. Rust forms when moisture remains on the blade after washing.
How to Clean a Mandoline Slicer Step by Step
First, unplug or lock the slicer to prevent accidents. Disassemble all removable parts, including the blade carriage and food holder. Rinse each piece under hot running water to remove loose debris. Use a soft brush or sponge with mild dish soap to scrub the blade and frame. Pay special attention to the blade edge, but always brush away from you. Rinse thoroughly to remove all soap residue. Dry each part with a soft towel or let them air dry completely. Reassemble only when every piece is bone dry. Store the slicer in a dry place, preferably with the blade guard on.
How to Prevent Rust and Keep the Blade Sharp
Always hand wash the mandoline instead of using a dishwasher. Dry the blade immediately after washing to prevent water spots and rust. Apply a thin layer of food-safe mineral oil to the blade occasionally to protect it. Store the slicer in a dry area, away from humidity. Use a blade guard or cover when not in use to avoid accidental damage. Avoid cutting hard items like frozen food, as they can dull the blade faster.
When to Replace or Call a Professional
If the blade is visibly nicked, bent, or cracked, replace the slicer or the blade if it's replaceable. Rust that doesn't come off with cleaning can compromise safety and performance. A dull blade that tears rather than slices cleanly is a sign it needs sharpening or replacement. Some manufacturers offer replacement blades, so check the manual. If you're uncomfortable sharpening the blade yourself, consult a professional knife sharpener. Never use a damaged mandoline, as it can cause uneven cuts and increase the risk of injury.