The acidity levels of coffee replicate tannins in wine, which allow amplification of flavor. But it doesn't stop there. Coffee rub on steak can also act as a tenderizer, making meat softer and enhancing the moisture of the meat by creating a sealed crust of flavor.
The spices in our rubs are processed in a facility that also processes products with nuts, dairy and gluten. We do not personally add any of these ingredients however, we can not guarantee that they are 100% free of them.