How to Clean a Rotary Cheese Grater | Keep It Cutting Smoothly

One wrong cleaning session can leave old cheese cemented into the drum’s tiny holes, making every future turn a struggle. The good news: cleaning a rotary cheese grater takes about two to five minutes once you know the routine. Whether yours has a removable drum and hopper or is a simpler box-style model, the same approach works: disassemble, remove loose cheese, wash, scrub, dry, and reassemble. Below is the exact sequence that prevents rust, odor, and stuck blades.

Disassemble the Rotary Cheese Grater First

Most rotary cheese graters come apart into a handle, drum or cylinder, hopper (where you load the cheese), and housing. Separate every removable piece before water touches anything. If a part won’t budge, check the user manual — forcing it can break the locking mechanism. For electric rotary grating equipment, unplug the unit first and remove only the food-contact parts; never submerge the motorized base unless the manufacturer’s instructions explicitly allow it. Wipe the base with a damp cloth instead.

Remove Loose Cheese Before Washing

Tap the disassembled parts over a trash can or sink to knock off loose cheese shreds and crumbs. Skipping this step sends solid cheese down the drain and forces you to scrub more aggressively later. For fresh, soft cheese like mozzarella, a quick rinse with warm water after tapping clears most of the residue before the soak begins.

Wash, Soak, and Scrub the Right Way

Rinse all removable parts with warm or hot water to loosen fresh residue. Then soak them in warm, soapy water for 10 to 15 minutes — longer for dried-on cheese, up to 30 minutes or even overnight if you’re using a baking-soda paste for stubborn spots. Use a soft brush, nylon brush, dish brush, or an old toothbrush. Avoid sponges, which can shred on the blades, and never use steel wool, metal brushes, or abrasive powders that scratch the grating surface.

Brushing direction matters: for box-style graters, brush from the inside out so trapped cheese exits through the larger openings. For flat or rasp-style drums, brush in the same direction as the teeth. For tough residue, try a gentle plastic scraper, a paste of lemon juice and salt, a vinegar rinse, or a baking soda paste. After scrubbing, rinse every part under running water until no soap or food residue remains.

If you’re looking to upgrade to a model that’s easier to clean or has more durable components, check our tested roundup of the best rotary cheese graters — we compared models with fully removable drums, dishwasher-safe parts, and smoother cleaning designs.

Dry Completely Before Reassembling

Pat every part dry with a clean towel, then let them air-dry upright or on a drying rack. Trapped moisture in the drum, handle joints, or housing seams leads to rust, spotting, and musty odors. For electric models, make sure the removable parts are bone-dry before reattaching them to the base. Once everything is dry, reassemble and store the grater in a dry drawer or cabinet.

Common Mistakes to Skip

Letting cheese dry on the grater. Dried cheese hardens inside the drum holes and requires much longer soaking or scrubbing. Clean the grater as soon as you’re done using it. Submerging non-submersible electric units. If the manufacturer says the base cannot be submerged, stick to wiping it — water inside the motor housing can destroy the unit and void the warranty. Using abrasive scrubbers. They leave micro-scratches where bacteria can settle and make the surface rougher for future use. Skipping the thorough dry. Even a few drops of water in a seam can cause rust over time, especially in humid kitchens.

For a routine clean between heavy uses, a quick rinse and a 2-minute scrub with a dedicated grater brush usually does the job. Reserve the longer soak, lemon-and-salt paste, or baking-soda method for when cheese has baked onto the surface. Always treat the blades with care — they are sharp, and reaching blindly into soapy water is a common way to get cut.