Infused with Bourbon, this is the wood we use to make our whiskey. Not just oak from a barrel but finishing woods like black cherry, sugar maple, and hickory. Our SmokerBricx are packed wet and packed fresh, full of aroma and flavor. Always solid wood, no sawdust, no bark and absolutely no fillers (except our bourbon) Bourbon infusedSolid Wood. No Sawdust and no bark. Absolutely no fillers (except our bourbon)Better Smoke. Better Flavor.