How to Clean Salt and Pepper Grinders | Without Ruining Them

Clean a salt and pepper grinder by emptying it, brushing the burrs dry, and wiping the exterior with a damp cloth—never submerging it.

Salt and pepper grinders sit on every counter, yet most people never clean them until the pepper stops flowing or the salt clumps into a solid brick. The process takes about five minutes and requires almost no supplies, but the one thing you cannot do is run the grinder under water. Moisture is the enemy of every mechanism inside, whether the burrs are steel, ceramic, or driven by a small motor.

This guide walks through the steps that work across manual mills and electric grinders, with the model-specific notes you need to check before you start.

What You Need Before You Start

Gather four things you already own: a soft dry brush (a clean pastry brush or old toothbrush works), a soft damp cloth, a dry towel, and uncooked white rice if the mechanism is clogged. Keep water, soap, and cleaning sprays away from the grinder’s interior—they wash away the oils that keep the burrs turning smoothly and can rust steel parts.

For electric grinders, unplug the unit or remove the batteries first. Cole & Mason’s care guidance for its electric models makes this the first step, and for good reason: a damp cloth near a live motor is an accident waiting to happen.

Step-by-Step: Cleaning a Manual Pepper Mill

Manual mills are the simplest to clean because most come apart without tools.

1. Empty the mill. Unscrew the top knob or nut, turn the mill upside down, and tap out the remaining peppercorns or salt into the sink or a bowl.
2. Wipe the exterior. Use the damp cloth on the outside only. If the mill has a wooden body, dry it immediately—wood swells and cracks when it stays wet.
3. Brush the burrs. The grinding mechanism sits at the base of the mill. Work the dry brush around the burrs and the threads where the top screws on, tapping the mill gently to dislodge loose debris.
4. Clear a clogged mechanism. If pepper dust has packed into the burrs, Cole & Mason’s manual advises adjusting the grind knob to create resistance, then using a pointed object like a toothpick to push the residue downward through the mechanism. Return the knob to your preferred setting afterward.
5. Dry and refill. Let every part air-dry completely before adding fresh peppercorns. Dampness inside the mill will make the new pepper stick to the burrs.

Grinding uncooked white rice through the mill is a widely used trick for dislodging stuck residue, since the rice is harder than the pepper dust but softer than the burrs. Run a tablespoon through, then brush out the rice powder. Wirecutter’s pepper mill guide notes this as a common maintenance step, though it is a general care tip rather than a universal manufacturer instruction.

Cleaning an Electric Salt and Pepper Grinder

Electric grinders need the same dry-brushing treatment for the burrs, but the motor housing changes the rules entirely.

The care manual for the KitchenIQ electric salt and pepper grinder is explicit: never immerse the motor housing in water, never put it in the dishwasher, and wipe the housing with a damp cloth only. The removable food-contact parts—the clear acrylic body and the grinding head—can be hand-washed in warm soapy water, but they must be dried completely before reassembly to keep moisture out of the motor.

A few model-specific differences are worth checking before you clean:

• Ceramic burrs resist corrosion and can handle a gentle scrub, but steel burrs rust quickly if any water reaches them.
• Acrylic bodies can cloud or crack if washed in hot water or the dishwasher.
• Battery compartments should be wiped with a dry cloth; if salt has spilled inside, brush it out before it corrodes the contacts.

If your grinder’s mechanism has seized despite thorough brushing, check whether the model’s manual allows the rice trick or recommends a specific disassembly path. When the manual is silent, stick to the dry-brush method—forcing water into an electric grinder is the fastest way to kill it. For anyone tired of cleaning batteries and motors entirely, Kitchprep’s tested roundup of battery powered salt and pepper grinders compares models that are easier to refill and maintain.

Mistakes That Ruin a Grinder

Most grinder damage comes from three avoidable errors: water, heat, and abrasives. Submerging the mill or running it through the dishwasher destroys wooden bodies, rusts steel burrs, and can short-circuit electric motors. Abrasive scrubbers scratch acrylic and strip the finish off wood. Cleaning sprays leave residue that mixes with your next batch of pepper.

The safest habit is simple: brush the burrs after every few refills, wipe the exterior monthly, and deep-clean with the dry rice method only when the grind slows down. That routine keeps the mechanism free of the pepper dust that eventually packs into every mill.