Domakihub How to Clean a Cheese Grater Thoroughly and Safely
Remove stuck cheese and dried residue without shredding your sponge or your fingers.
Reviewed by Domakihub cleaning pros · 2026-06-23 · 4 min read
A cheese grater collects hardened residue in dozens of tiny blades, and scrubbing it carelessly shreds sponges and risks cuts. The video above from Cooking Light shows the core trick in under a minute; the guide below walks through every step in detail so the job is quick, safe, and thorough. Whether you are managing a busy holiday rental kitchen in Santorini or keeping a hotel's prep station hygienic, a clean grater means better hygiene and a longer-lasting tool.
Why Cheese Gets Stuck — and Why It Matters
Cheese contains fat and protein that bond to metal the moment they dry. Even a ten-minute delay after grating is enough for residue to harden inside the micro-blades, making hand-washing feel like an uphill battle. In warm Greek kitchens — especially in summer — the process accelerates noticeably.
Stubborn buildup is more than an aesthetic problem. Trapped organic matter can harbour bacteria, produce off-flavours in the next batch of food, and — over time — corrode stainless-steel edges. Cleaning promptly and correctly protects both food safety and the tool itself.
Box Grater vs. Flat Grater: What Changes
A four-sided box grater has interior surfaces you cannot reach with a flat sponge, so technique matters more than on a simple flat paddle grater. A rotary or drum grater can usually be partially disassembled, which makes cleaning easier but requires a different approach. The steps below cover the standard box grater; notes for flat and rotary types are included where relevant.
For all grater types, the golden rule is the same: act while the cheese is still moist when possible, and always scrub in the direction the blades point — not across them — to avoid catching the sponge or your skin on the sharp edges.
How to Clean a Cheese Grater in 5 Steps
- 1
Rinse immediately after use
As soon as you finish grating, hold the grater under warm running water and rinse off as much loose cheese as possible. Do this before the residue has a chance to dry. A gentle stream directed into the inside of a box grater flushes out particles trapped between the blades. This single habit reduces scrubbing time by more than half.
- 2
Soak in hot soapy water for 5 minutes
Fill your sink or a large bowl with the hottest water you can manage and add a generous squirt of dish soap. Submerge the grater and let it sit for at least five minutes. The heat softens fat, the soap breaks down protein bonds, and dried cheese begins to loosen without any scrubbing effort. For badly caked graters, extend the soak to 15 minutes.
- 3
Scrub with a stiff brush — not a sponge
Use a stiff-bristled cleaning brush or an old toothbrush rather than a flat sponge or cloth. Brushes can work into the blade cavities without snagging. Scrub in the same direction the blades slant — typically downward — using short strokes. For the inside of a box grater, insert the brush through the open top and work from the inside outward. Avoid steel wool on stainless steel unless rust is already present, as it can scratch the surface.
- 4
Tackle stubborn spots with a raw potato or lemon
If cooked-on residue remains after scrubbing, cut a raw potato or a halved lemon and rub the cut side across the problem area. The starch in the potato acts as a mild abrasive that fills the blades and pushes residue out as you rub; the acidity in lemon breaks down proteins and deodorises. This old kitchen trick works surprisingly well and avoids the need for harsh chemical cleaners.
- 5
Rinse, dry, and store correctly
Rinse the grater thoroughly under warm running water to remove all soap and potato or lemon residue. Shake off excess water, then immediately dry with a clean cloth or paper towel, wiping in the direction of the blades. Never leave a metal grater air-drying in a pool of water — this is how rust spots start. Store it upright or hang it so air can circulate, and it will stay sharp and clean for years.
Rather have a pro handle it?
Get a vetted cleaning pro in your city — one number, booked in EN/EL/DE.
FAQ
- Can I put a cheese grater in the dishwasher?
- Most stainless-steel box graters are technically dishwasher-safe, but repeated dishwasher cycles can dull the cutting edges over time and may cause discolouration. If you do use the dishwasher, place the grater on the top rack with the blades pointing downward, and dry it promptly after the cycle to prevent rust spots from forming in the joints.
- How do I remove rust from a metal grater?
- Light rust can usually be removed by soaking the grater in a solution of equal parts white vinegar and water for 30 minutes, then scrubbing with a stiff brush or fine steel wool. Rinse well and dry immediately. If rust is deep or widespread, it is safer to replace the grater, as corroded blades can flake metal particles into food.
- How often should a cheese grater be deep-cleaned?
- Rinse after every use. A proper scrub with hot soapy water should follow every use as well, since cheese residue hardens quickly. A deeper soak and spot-clean with lemon or potato is worth doing weekly if the grater is in regular use — particularly in a rental property or hotel kitchen where hygienic standards matter for guests.