How to Clean Salt and Pepper Grinders | Keep Them Turning

For the full breakdown, see our best Wooden Salt and Pepper Grinders guide.

When your pepper mill stops grinding or the salt clumps mid-dinner, the fix is usually a ten-minute clean. Most grinder problems come from old spice dust jammed in the mechanism or moisture that’s rusted the burrs. The right method depends on whether yours is a manual mill or an electric grinder, so the first step is knowing which parts come apart. For the full breakdown of what works, a guide from Cole & Mason and Wirecutter’s testing both show the same core routine: keep water away from the grinding parts, brush everything dry, and reassemble only when fully dry.

The General Cleaning Routine That Works for Most Grinders

Start by emptying the grinder completely. Unscrew the top nut or knob and lift off the lid, then turn the mill upside down over the sink or a bowl to shake out the remaining salt or pepper. Cole & Mason’s official guide says once the mill is empty, a small brush does the best job on the inside and the grinding mechanism itself.

Follow these steps for a standard manual mill:

• Remove all removable parts — the top nut, lid, and any base that twists off.
• Shake and tap out loose spice, then brush the interior and the burrs clean.
• Wipe the exterior with a slightly damp cloth. Plain water is enough; Cole & Mason advises against cleaning sprays.
• Dry every piece completely before reassembling.

Manual Versus Electric: What Changes

Electric grinders follow the same logic with one hard rule: never immerse the motor unit. The electric salt-and-pepper grinder manual from QVC says the motor housing only gets a damp-cloth wipe, never a rinse, while the detachable spice compartment can be washed in warm soapy water as long as you dry it thoroughly before clicking it back in.

For manual mills like those from Cole & Mason, the whole top section usually comes apart, which gives you better access to the mechanism. The trade-off is that manual grinders have more threads and moving parts to dry completely. Whatever the design, the universal rule is that water ruins grinding mechanisms whether they’re metal or ceramic.

Common Mistakes That Ruin Grinders

The fastest way to wreck a good grinder is treating it like regular kitchen gear. The biggest offenders:

• Soaking or dishwasher cleaning. Unless the official manual explicitly says a part is dishwasher-safe, hand-wash only. QVC’s manual explicitly says no components go in the dishwasher.
• Submerging electric models. The motor unit is never waterproof.
• Using harsh chemicals or abrasives. Cleaning sprays, wire brushes, and scouring pads strip finishes and clog mechanisms.
• Reassembling while damp. Trapped moisture causes rust, salt clumping, and seized mechanisms.

If your manual grinder is still jammed after brushing, the issue is likely old, caked spice that needs a deeper disassembly. Some mills allow the bottom cap to unscrew for a full cleaning of the shaft — check your model’s manual to confirm it’s removable before forcing anything.

FAQs

Can I wash my salt and pepper grinder with soap and water?

Only the parts the manufacturer explicitly marks as washable. Most grinders tolerate warm soapy water on removable glass or plastic spice compartments, but the grinding mechanism and any electric motor should only be wiped with a damp cloth. Soaking a pepper mill often leaves moisture trapped in the shaft, which leads to rust and clogged burrs later.

How often should I clean my grinder?

Wipe the exterior and brush the mechanism any time you refill it, which gives you a natural cleaning schedule of every few weeks to monthly depending on use. A deeper cleaning with full disassembly is worth doing once or twice a year. If you notice slower grinding or salt sticking, clean it sooner rather than later.

Why does my pepper mill stop grinding?

The most common cause is oil from peppercorns mixing with old spice dust, which cakes into a paste that clogs the burrs. Less often, moisture causes the salt to clump and jam the mechanism. Brushing out the residue and drying everything fully usually restores normal grinding. If it still struggles, check whether the adjustment knob is set too fine for the spice you’re using.