Lighthouse Pepper Mill: How to Fill and Adjust the Grind
By Grunwerg | Published: 2026-10-31
Category: How-to Guides
Learn how to fill the Lighthouse Pepper Mill without spills and adjust the ceramic grinder for the coarseness you want. Simple steps for clear acrylic mills.
Quick answer
To fill the Lighthouse Pepper Mill, unscrew the top knob, lift off the cap, and pour peppercorns into the clear acrylic body. To adjust the grind, turn the knob clockwise for finer or counterclockwise for coarser, then test on a few peppercorns.
Why the acrylic body and ceramic grinder matter for filling and adjusting
The clear acrylic body lets you see exactly how full the mill is, so you can refill before you run out mid-recipe. The ceramic grinding mechanism is hard-wearing and won’t corrode, but it still needs occasional cleaning to keep the grind consistent. Because the mill is compact (14.5 cm), it holds a modest amount of peppercorns—plan to refill more often if you cook daily.
When to refill and when to adjust
Refill when the peppercorn level drops below the top of the ceramic grinder—running it empty can dull the mechanism. Adjust the grind only when the mill is loaded with peppercorns; turning the knob on an empty mill gives a false sense of the setting. If you switch between fine and coarse grinds often, make small quarter-turn adjustments and test each time.
Step-by-step: filling and adjusting your Lighthouse Pepper Mill
- Unscrew the top knob: Turn the knob at the top of the mill counterclockwise until it comes off. Set it aside where it won’t roll away. Don’t force the knob if it feels stuck—check for peppercorns caught in the threads.
- Lift off the cap: Remove the cap to expose the filling opening. If the cap is tight, twist gently while lifting. Keep the cap dry; moisture can make peppercorns clump.
- Pour in peppercorns: Use a funnel or a folded piece of paper to pour whole peppercorns into the acrylic body. Fill to about 1 cm below the top of the body. Don’t overfill—leaving a small gap makes it easier to replace the cap without crushing peppercorns.
- Replace the cap and knob: Put the cap back on and screw the knob clockwise until snug. Don’t overtighten; the knob should turn freely for grind adjustment. Test that the knob turns smoothly before grinding.
- Set the grind: Turn the knob clockwise for a finer grind or counterclockwise for coarser. Make small quarter-turn adjustments and grind a few peppercorns to test. Adjust only when the mill contains peppercorns; an empty mill won’t give a true setting.
- Grind and check: Grind a small amount over a plate and check the consistency. Repeat the adjustment if needed. If the grind feels inconsistent, empty the mill and brush out the ceramic mechanism before resetting.
Product facts
- Lighthouse Pepper Mill, Clear Acrylic, 14.5cm: Clear acrylic body that is hard-wearing and easy to clean. You can monitor the pepper level at a glance and wipe the exterior clean without disassembling the grinder.

Lighthouse Pepper Mill, Clear Acrylic, 14.5cm - Lighthouse Pepper Mill, Clear Acrylic, 14.5cm: Quality ceramic grinding mechanism. Ceramic stays sharp and won’t rust, so the grind remains consistent over time with normal use.
