Does anyone know what the spice is that gives A-1 sauce it's distinctive taste? I ate at a BBQ place that had a sauce with an ingredient I had never tasted in BBQ sauce before but knew I had tasted it somewhere. I figured out it was in A-1 sauce. My wife, who has a nose like a bloodhound, confirmed it after smelling and tasting both of the sauces. The sauce I bought from the BBQ place is really overwhelming. I mixed some of it with a mustard sauce I make and it was really good. I'd like to try adding that spice to my recipe. Thanks for any help.