Buffalo Trace Straight BourbonBuffalo Trace's namesake bourbon is considered the gateway that opens up the path to everything else Buffalo Trace. BT, like Eagle Rare 10 and Stagg Jr, is made from the lower rye content mash #1. With the same mash, the variance between bourbons then, apart from proof, primarily comes from barrel selection across various rickhouses and floors. The former George T. Stagg distillery was renamed Buffalo Trace when Sazerac took over ownership in 1999.