TX Straight Bourbon Tawny Port Finish is made by Firestone & Robertson Distilling Co. in Fort Worth, Texas. It starts with four year-old TX Straight Bourbon made from corn, wheat and malted barley all grown in Texas and finished for six months in 10 year-old tawny port casks made from European oak. It is bottled at 101.6 proof (50.8% ABV).