SMALL BATCH TEXAS STRAIGHT SMALL BATCH BOURBON WHISKEY | 94 PROOF Garrison Brothers is fully committed to proving that the finest bourbon whiskey on the planet will be born in the Texas hill country. Garrison Brothers Small Batch Texas Straight Bourbon Whiskey is a true Texas Bourbon that lives up to that commitment. Every barrel thats married together to create the Small Batch is at least four years old. Each year, a brand new vintage of this highly-coveted bourbon is released.