Cheese and food residue dries hard in grater holes within minutes and becomes very difficult to remove without the right approach. Cleaning immediately after use makes the job significantly easier.
Immediate Clean (Best Approach)
- Rinse the grater under cold water immediately after use — hot water melts and re-sets melted cheese into the holes
- Use a stiff dish brush (not a sponge) to scrub both sides of the grater surface — the brush bristles reach into the holes without snagging
- Scrub in the direction the holes open (downward for most box graters) so residue pushes out rather than deeper in
- Rinse under running water while brushing
- Dry immediately with a cloth or paper towel to prevent rust on steel graters
Dried Residue
If cheese or food has dried on:
- Soak the grater in warm (not hot) soapy water for 5–10 minutes to rehydrate the residue
- Scrub with a stiff brush
- For stubborn bits in the holes: cut a lemon in half and scrub the cut face across the grater surface — the acid helps break down protein residue
Dishwasher
Most stainless steel graters are dishwasher safe. Place in the top rack with the grating surface facing down. The high-pressure water from below pushes residue out through the holes rather than deeper in. Dry immediately after the cycle to prevent rust.
Tips
- Spray the grater with cooking spray before grating cheese — it creates a barrier that makes clean-up significantly easier
- Never use a sponge directly on a grater — it shreds the sponge and embeds foam in the holes
- Store graters dry — even stainless steel develops rust spots if stored damp
- Microplane graters: same approach, but handle even more carefully — the ultra-fine teeth are sharp and dense; use a brush only