Hardwood lump charcoal. Features extra large average lump size for maximum performance. 100% ultra-dense Quebracho Blanco Axe-breaker hardwood. No spark, pops, or flare-ups. Produces minimal ash and no heavy smoke. Award winning flavor profile. 1100 degrees Fahrenheit+ maximum temperatures with 20+ hour smoker or 4+ hour grill burn time. Superior yield, and reduced refueling and maintenance. WARNING.CARBON MONOXIDE HAZARD Burning charcoal inside can kill you. It gives off carbon monoxide, wich has no odor. NEVER burn charcoal inside homes, vehicles or tents. - Wood dust