The Four Roses Distillery actually produces ten different styles of whiskey. They have two mash bills (one with 20% rye; the other with 35% rye). They also use five different yeast strains. So, that makes ten possible combinations.

Distillery Manager Jim Rutlede talked about it here during a guest blog  a while back. Jim uses these ten different styles to blend together (in combinations he feels are appropriate) to make the different bottlings of Four Roses bourbon.

Well, Jay Erisman, the Spirits Manager of The Party Source–and also the author of our Four Roses feature a while back in Malt Advocate–has convinced Four Roses to let him do something really cool. He’s going to do ten different single cask bottlings, using each posssible yeast strain and mash bill combination.  

The first two of ten have already been bottled. You can find the details of Jay’s excellent adventure here on The Party Source’s blog. This should be a very interesting (and informative) project.