Set up your smoker for cold smoking, 80-90 F. I used 4 lit charcoal briquettes and a large piece of hickory wood. Keep some unlit charcoal on hand for when the charcoal starts to burn out, you may need to add more depending on how long you smoke the peppercorns. You can add unlit charcoal, just make sure you do it soon enough that it gets time to get well-lit from the already-burning coals.
Add the peppercorns to a food-safe screen and place onto the smoker.
Smoke at least 4 hours depending on how much smoke you want. You may want to remove a few peppercorns and grind them to taste for smokiness.
Remove and let cool before storing or grinding.
Store in an air-right container.