four roses produces single barrel bourbons - typically through their barrel select program, where you can taste a couple of different mash bills, but more impor

four roses produces single barrel bourbons - typically through their barrel select program, where you can taste a couple of different mash bills, but more important to the question: yeasts. you can taste the different yeast strains changing the end flavor. everything makes a bit of difference, if you're you're not trying to make neutral grain spirit.